PDF malware analysis — malicious · d7cde09c84562803

MALICIOUS

PDF

91.7 KB Created: 2021-08-08 18:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 5c25675c4804aa7784f0b50342477907 SHA-1: a5b41da3aea382d08870217323aa1cfff15f3392 SHA-256: d7cde09c84562803968d6b9d00d61d73f3a264155e1a7ebb153f6e70a94c2544

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The sample was detected as malicious by ML classifiers and ClamAV, and exhibits characteristics of a payment redirection lure. It contains numerous links to compromised WordPress sites, suggesting an attempt to host malicious content or redirect users to phishing pages. The PDF structure and embedded links indicate a likely spearphishing attachment designed to trick users into financial fraud.

Machine Learning

Nyx PDF Classifier malicious score 0.9905

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/091bc0fb2906e731ed5bf1ea9b0ae733/61264157953.pdf In PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160fdeed836823---daduv.pdfIn PDF document text
- http://xnucleus.com/members//member_images/files/xobodujojer.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f5700f942---tubiwakizituwoz.pdfIn PDF document text
- https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/a8eae91d919eefc2828d6890b2d46688/18260700916.pdfIn PDF document text
- http://onfireinteriors.com/userfiles/xawigakewovirasel.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/b3d5f063a30e2fc7a1e8be75f50f7a07/2580379003.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16095f8abe799b---63405520743.pdfIn PDF document text
- http://www.logomarcanet.com/userfiles/file/94868304994.pdfIn PDF document text
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/jo2clalioolro126ltkdre5t08/82900093655.pdfIn PDF document text
- https://cet.sk/res/file/tajunobuvup.pdfIn PDF document text
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/r66rh6aljk89gscqk1ugkh6863/vexatililumivufibudir.pdfIn PDF document text
- http://asremajazi.com/uploads/files/jitisavuxokuselok.pdfIn PDF document text
- http://blessedfamilycovenant.org/clients/c/cb/cb727bc273eb4203dc66fb73741ae5ae/File/59328026010.pdfIn PDF document text
- https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/bjgo9q7792870342mugidr4q53/sevunurozulewikubadaz.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec95ef3018---89058382766.pdfIn PDF document text
- http://clase86marista.com/clients/25276/File/tuxaxukiw.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d442b718253---dazumilatatobakoso.pdfIn PDF document text
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/abd231207178e0982bfc359cc88b0b3e/34939693837.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/542ef0ka1hrrvb3nf56vka008d/libabakatuzexizagijazali.pdfIn PDF document text
- http://basaritarim.net/admin/editor_resim/file/58052115787.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6866b571ef---buputemeb.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607882150c081---90809769846.pdfIn PDF document text
- http://highendschmiede.de/highendfiles/file/10944438394.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e76703918---segegiduweni.pdfIn PDF document text
- http://cleangroupbd.com/ck/upload/files/25727956309.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a910b4dd0be---54745959961.pdfIn PDF document text
- https://asset-books.com/userfiles/file/rutuwowanetavigiz.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+transfer+ppf+account+from+sbi+to+bank+of+barodaPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ffaa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFAA	17384 bytes
SHA-256: `072aa0292779c0bf6ee202a2a0e35b86473692abe821966b6be35800b6ecdb3b`
`font_01_sfnt_off00012d81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D81	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014598.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14598	11144 bytes
SHA-256: `282ab1d6caa02cd966523d63ea6ae8dca436f33e17854e71104e82c8ffc06050`

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