Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc1381d9c145a88…

MALICIOUS

PDF

66.9 KB Created: 2020-11-18 18:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e7adbe0ba4a636239afa1f2fbfa98603 SHA-1: 1420bcda64fa870d9e89532aebe7e236873cc8d9 SHA-256: 0bc1381d9c145a88065daa67670b6cbafe6862efbe2d55bd0fcaa0ab3654f505
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly domains, suggesting a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to 'Ordeal by cheque pdf', reinforcing the phishing lure. No scripts were extracted, but the PDF structure itself is used to host malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffnew.ru/123?utm_term=ordeal+by+cheque+pdf PDF link annotation
    • https://dolevepi.weebly.com/uploads/1/3/4/5/134587457/satijeximobu.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/daa4b65d9d.pdfIn PDF document text
    • https://kavixonew.weebly.com/uploads/1/3/4/5/134592395/buwebepu.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/3935063.pdfIn PDF document text
    • https://padavosasosak.weebly.com/uploads/1/3/4/6/134632247/zixobaruvusul-melol-geguliwafo-dejitadomamuji.pdfIn PDF document text
    • https://duxataravur.weebly.com/uploads/1/3/4/0/134017775/93af7b91.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/what_is_the_mouth_of_river_thames.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/agenda_2030_del_desarrollo_sostenible.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/download_tap_titans_2_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/zukelopafibepim.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/16394265494.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/math_2_answers_bully.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/mepetafesaserulavip.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/posolegu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC6 5460 bytes
SHA-256: 95f8c371914d2b45a78e4e6bb4b3d2130cb77e9bee16a721092816b544e84efc
font_01_sfnt_off0000dd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4D 9804 bytes
SHA-256: 2e20fd0701fd1bec857b5197203b7bf55a4b5f3912bd8221cbabf44a016f6685

Open this report in the interactive analyzer, or submit your own file for analysis.