Malicious PDF — malware analysis report

Static analysis result for SHA-256 2817464c6d6a6d1a…

MALICIOUS

PDF

74.9 KB Created: 2021-03-11 02:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 7a1e0702cb52b192fb498701c283edf7 SHA-1: 8b58cb2cd1ca59d4cb03ab09f9978d8bcef2a6bb SHA-256: 2817464c6d6a6d1ae4e79f1d2cec54e5f4a60825f059771a07f7c61463ecedba
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=jackie+jerome+rogers+36 PDF link annotation
    • https://cdn.sqhk.co/nisisepolo/Tm1hjge/food_adulteration_project.pdfIn PDF document text
    • https://vorexumezekadan.weebly.com/uploads/1/3/0/9/130969740/pulinisozarifi.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/hahgFHj/turomunugewom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501229/normal_5fdc5fc4f3309.pdfIn PDF document text
    • http://moneyindia.site/jofudolabixejigateloboje6gov4.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/31631281756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_5fd272c4f303d.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/joladezo_xerolomenelaxi.pdfIn PDF document text
    • http://jafalule.22web.org/69050744788.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/6000602664.pdfIn PDF document text
    • https://xevefoworux.weebly.com/uploads/1/3/1/3/131380592/1857858.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_5fcce153b6ff6.pdfIn PDF document text
    • http://numulul.mygamesonline.org/pupomofi.pdfIn PDF document text
    • http://volosaty100.xyz/best_pill_for_moodsc207m.pdfIn PDF document text
    • http://0fruit.space/check_if_bundle_is_null_androidp3gvo.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/ibKesZG/based_zeus_texting_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tumexifukevu/4jhVgid/gifum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_60310af28ba10.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/V3qcjaj/ruxenewiladuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375518/normal_5ff0403ad5ae6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rijujala.epizy.com/hernia_umbilical_lactantes.pdfIn PDF document text
    • http://jekidosokun.epizy.com/bixolon_net_configuration_tool.pdfIn PDF document text
    • http://livirava.atwebpages.com/17103735913.pdfIn PDF document text
    • http://verepipu.epizy.com/rozep_trio_tablet.pdfIn PDF document text
    • http://weketabafizevu.epizy.com/nupewozukenimavavefep.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_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 5536 bytes
SHA-256: 784b5cbcd358258cba6aec3ede66ed36c71b7165d2cee3b8f285078a751399a0
font_01_sfnt_off0000fab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB2 10288 bytes
SHA-256: 0bf8851071acb74093c599408ffdcc023768707faab91e7d0a641475651a8ac4

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