PDF malware analysis — malicious · c0e34361c5397a48

MALICIOUS

PDF

85.1 KB Created: 2021-07-31 12:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: d864e42c632701b64503c82837fd87a9 SHA-1: db536bdb6ab735665a0eaae6cdf1e279f4236055 SHA-256: c0e34361c5397a482f51368a2340905e70b8e4a2deacc98a0d06e522c9c68bfe

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a payment redirection lure. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute malicious content or phish for financial information. The presence of embedded URLs and the overall structure indicate a likely attempt to exploit vulnerabilities or trick users into downloading further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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://queure.ru/uplcv?utm_term=how+to+use+calculator+hide+app+in+iphone PDF link annotation
- http://olddieselparts.com/ckfinder/userfiles/files/32269285829.pdfIn PDF document text
- https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/382f3f038947889808828b69a9ad74cf/97391416081.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5272f1bcf---37084218262.pdfIn PDF document text
- http://barsugo.com/ckfinder/userfiles/files/wirupufasebisabij.pdfIn PDF document text
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/6a36321fce30e1baf2a5c5178dedecac/9832394299.pdfIn PDF document text
- http://mckeoughfamilyreunion2021.com/clients/b/ba/baf9e6b347377fae0abe5a87436fc4cf/File/jidugilolanutiwibudejuj.pdfIn PDF document text
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e9ac340fc---62524069379.pdfIn PDF document text
- https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b083fa5afcb---zesuwaxetebu.pdfIn PDF document text
- http://hoangle.vn/uploads/userfiles/file/26239283353.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5af9704c4---1162362527.pdfIn PDF document text
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/86448314285ef6654f04216afa37c917/kexer.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160899192355c1---28415780630.pdfIn PDF document text
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/97ad9cea58398b1d7f316e0f41b33b87/49296702608.pdfIn PDF document text
- http://novo-foto.ru/ckfinder/userfiles/files/sonugosipefokogorigobeso.pdfIn PDF document text
- https://elektrona.cz/files/file/xirekutijixuxubupewe.pdfIn PDF document text
- https://airbays.com/userfiles/file/77446905547.pdfIn PDF document text
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//5007116595.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9ae70d17e---91791349212.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af77df1e4ec---73930761393.pdfIn PDF document text
- https://eventaipei.com/upload/files/84107364510.pdfIn PDF document text
- http://yakutiaprime.ru/SITE/files/editor/file/baxirexomukorofikejelu.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/cd42c02e862cb5dec12ee62149b99695/8672869435.pdfIn PDF document text
- http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/6942bb8bacbb82945fd513e8559051ac/48744649612.pdfIn PDF document text
- 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_off0000e8cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8CC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000100e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100E3	10788 bytes
SHA-256: `cf9192738b14df9f1835cc674ada002dc09db9837f14b1b1800263559c535e79`
`font_02_sfnt_off000119b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119B9	17120 bytes
SHA-256: `b4e8df354a5f101b403d812a0eb2aaa7859ad3b7ec80cb14bf22e8d9d47a87a0`

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