Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cbadaf16c0fc37…

MALICIOUS

PDF

83.2 KB Created: 2021-02-23 06:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8044608b79118b401801b410ff3352ae SHA-1: 9797d0a9afd3b58947afe39715729c6d7e03f9f0 SHA-256: 34cbadaf16c0fc37ccfbdfd6dcefb7998cf29758987daaaf6df253d3bd18a939
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, with one pointing to 'seumenha.ru', likely intended to redirect users to malicious content or phishing pages. The presence of multiple Weebly-hosted PDF links suggests a coordinated effort to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/123?utm_term=royal+caribbean+drink+package+promotion+2021 PDF link annotation
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/juzux.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/rudopoxejewewajabir.pdfIn PDF document text
    • https://jasutabaxe.weebly.com/uploads/1/3/0/8/130873915/wemowawopo.pdfIn PDF document text
    • https://cdn.sqhk.co/litepepiwed/ITyjgji/game_center_app_missing_ios_12.pdfIn PDF document text
    • https://cdn.sqhk.co/muzedikerum/Yjbihav/66888784585.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/taxefu.pdfIn PDF document text
    • https://xetibipu.weebly.com/uploads/1/3/4/5/134528590/4614310.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/JjfJijH/deus_ex_good_cop_bad_cop_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xopugup/kadixa.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/87658085124.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/ketozibujokuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/foxanokob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B9 5644 bytes
SHA-256: 35be6486f6b3eb6bf11a5070cf5321ca4a64402484486edc585748a247ef1832
font_01_sfnt_off00010adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADC 11572 bytes
SHA-256: 1254b36dd0ea67f1e07b15adce437548530914ccb4136af0d591b06b26193d3d
font_02_sfnt_off000131ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131EA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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