Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f0025f761f901b…

MALICIOUS

PDF

80.1 KB Created: 2021-06-03 05:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f65af371cb4b613dae48611ea1278867 SHA-1: e63cc0d25e4e03080d558ef84e50c2687ca9dec0 SHA-256: 67f0025f761f901ba6b1d92986a23f2c3729e9d0b7b2304fbf998c368197937e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, characteristic of a link farm or phishing attempt, with one URL specifically mentioning 'estate agent contract'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://huntic.ru/pbw?utm_term=can+i+cancel+my+estate+agent+contract
    • https://zotadipijipas.weebly.com/uploads/1/3/4/4/134467791/takixek.pdf
    • https://paxolobiwoke.weebly.com/uploads/1/3/1/1/131163878/22779c598a7.pdf
    • https://lesinagin.weebly.com/uploads/1/3/1/4/131454304/d60e36.pdf
    • https://gutorurogo.weebly.com/uploads/1/3/4/0/134017664/gizivemiwutin_nebilob.pdf
    • https://porijupipisezug.weebly.com/uploads/1/3/4/7/134718457/7612161.pdf
    • https://jowiginuzag.weebly.com/uploads/1/3/1/4/131438641/masenojeg_sibezaziboga.pdf
    • https://jawonuvanez.weebly.com/uploads/1/3/6/0/136021807/tarisunigavofig.pdf
    • https://feditesar.weebly.com/uploads/1/3/1/4/131483001/5389604.pdf
    • https://ligezuwokatajef.weebly.com/uploads/1/3/1/6/131606313/pawowejutukulegoj.pdf
    • https://bategasef.weebly.com/uploads/1/3/2/7/132712490/418a44f95d.pdf
    • https://gebekogekikak.weebly.com/uploads/1/3/4/6/134694855/1190687.pdf
    • https://vukojudal.weebly.com/uploads/1/3/5/3/135317211/6281008.pdf
    • https://wogakidip.weebly.com/uploads/1/3/5/3/135384189/vefatumafuxap.pdf
    • https://nuzefamulazoxiz.weebly.com/uploads/1/3/4/5/134582777/kijomoruminukoxobuxa.pdf
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/tafubisiwuzudota.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b1809375-b024-4116-8c9f-73f748dc77d5/portal_primaria_tic_http_basica.primariatic.sep.gob.mx.pdf
    • https://uploads.strikinglycdn.com/files/015dc7e4-eaa4-4228-a609-e3582a0dfc05/wadalemefigebufobe.pdf
    • https://uploads.strikinglycdn.com/files/57ee90f7-8bda-44de-bac3-759a82ff9d87/solutions_manual_for_organic_chemistry_8th_edition.pdf
    • https://uploads.strikinglycdn.com/files/170b439a-45ba-4329-8985-b6e05b66b391/yamaha_hs8_studio_monitor_speakers.pdf
    • https://uploads.strikinglycdn.com/files/f774b3ab-738b-4bbf-ba56-3a7a34a34fc0/gitoxepevotagevivove.pdf
    • https://uploads.strikinglycdn.com/files/ac9c45ce-92cb-495a-8245-82fb2e2ff8c5/king_kutter_tiller_7.pdf
    • https://uploads.strikinglycdn.com/files/c0cfd7b2-5c81-4d76-9a44-24cce11fe6a2/wudelinaboniguvudixet.pdf
    • https://uploads.strikinglycdn.com/files/0a79d441-bb80-4144-9d9c-0ae3ff1accf4/14592439119.pdf
    • https://uploads.strikinglycdn.com/files/2aeb000d-b2a9-48ca-bc0b-5cc90f5184ee/bryant_plus_90_furnace_inducer_motor_noise.pdf
    • https://uploads.strikinglycdn.com/files/d2f510aa-7a69-4cc7-bf5a-508a9f310999/hamilton_flexbrew_replacement_parts.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbda.bin
5c89ff422e19e96ca869b5c23cde08cb5a130e80437c30dbed22eb203e61416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDA 5124 bytes
font_01_sfnt_off00010d37.bin
0fba619432eef2767a790bf48af24603f34e4d1dd2391ab2af7e3e7a4c629802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D37 10960 bytes

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