PDF malware analysis — malicious · fcd5131970a78a8c

MALICIOUS

PDF

81.5 KB Created: 2021-09-01 01:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: a41b370353a9fcf0bdee697b64b090c5 SHA-1: b09de3428209a6d9a83b8f91204e91129f2f5c76 SHA-256: fcd5131970a78a8cc9b464df233f017f256ed32d576ed681ac70ed90257fe9ee

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, for being malicious. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into believing there are new or changed payment instructions. The numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggest a phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/2ae24b43a072eabd542f78b62cbf1562/93997760750.pdf In PDF document text
- http://vom-ragnaroek.de/uploads/file/bogavezulasodejifatopoke.pdfIn PDF document text
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/8665e24aa1576dc06f5fd4ccc669f9ee/24184095781.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/161280277b3121---miwotaxikafepapofom.pdfIn PDF document text
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/d29136f91902c4503a0c49b0cb53497c/8016185122.pdfIn PDF document text
- https://cr2tek.com/userfiles/Proj_Name//files/2142662491.pdfIn PDF document text
- http://marinaxaraes.com.br/ckfinder/userfiles/files/kusere.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8273a86aca---boxupip.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/a678c1942ff75dee3c595fdee572897d/74555976950.pdfIn PDF document text
- http://primaneighbors.com/userimages/tojenu.pdfIn PDF document text
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/caf5q4860uoblkrirbq3ragotl/7215266754.pdfIn PDF document text
- https://metal-et-verre.ch/ckfinder/userfiles/files/38836637160.pdfIn PDF document text
- http://loaamtran.com/files/usersfiles/files/vizasirafavumetatefin.pdfIn PDF document text
- http://sakuragiramenandsushi.com/uploads/files/1245119410.pdfIn PDF document text
- http://jkbprivateiti.com/userfiles/file/36087597052.pdfIn PDF document text
- http://barudan.hk/UploadFile/file/20210703153113685.pdfIn PDF document text
- http://illinoislivestock.org/userfiles/file/vevisifakokibawofaba.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/fko9l6fs4007jb9bks117n2mtb/85757435348.pdfIn PDF document text
- http://demirlermetal.com/resimler/files/37796611258.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160982df0d752c---14679306431.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160de22b20be5b---25758468860.pdfIn PDF document text
- http://savitapiti.org/ckfinder/userfiles/files/fidigopa.pdfIn PDF document text
- https://mertlakustika.cz/images/pages/file/vakuvomole.pdfIn PDF document text
- http://usmleworkout.com/files/file/juximudufekol.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/9084ff08493625c56b0cc3f7479bfcf0/kumopezajiwagesojemonejam.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a06a352c82d---9503633636.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=data+theft+includesPDF 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_off0000dbe3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBE3	10452 bytes
SHA-256: `5e619ec115caa5888297c4443e8ce760eb1950e410db20306cb18cd56787d74f`
`font_01_sfnt_off0000f388.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF388	17464 bytes
SHA-256: `8f6ede27434b98f67b0448d6c276972fe90c7e0e4efa30c7a3542243a5cbfcc6`
`font_02_sfnt_off0001206f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1206F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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