Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6a2f1e2d510bb2…

MALICIOUS

PDF

78.6 KB Created: 2021-03-05 17:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b1b38e108fafd9b5055d997aaba932dd SHA-1: dd6828aba371e808fb08beb55be52049ac10057e SHA-256: 0b6a2f1e2d510bb2cda43dd82cba899e357bea9b214bb76f763700d80b2b09bb
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains references to game hacks, indicating a lure to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/wix?keyword=gem+hack+for+shadow+fight+2 PDF link annotation
    • http://canlisohbetim.net/wings_of_fire_legends_series_book_2djf58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495854/normal_5fefa7c585c27.pdfIn PDF document text
    • https://jimukara.weebly.com/uploads/1/3/4/2/134235432/7ff35ffb5cab.pdfIn PDF document text
    • http://wedejopejujotu.iblogger.org/berlitz_spanish_premier.pdfIn PDF document text
    • http://zhk-rekord.info/tadenogapakixivinebapugubpez5i.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/3180f38e3ac8.pdfIn PDF document text
    • https://vojumemij.weebly.com/uploads/1/3/4/4/134473557/8aba5ba.pdfIn PDF document text
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/fdfe649b8c96bbf.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/nifoni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490369/normal_5ff892e04e375.pdfIn PDF document text
    • https://rovizefodizare.weebly.com/uploads/1/3/4/3/134309954/kedojepudunuselabo.pdfIn PDF document text
    • https://jutamuxenaritul.weebly.com/uploads/1/3/1/4/131452982/nokefuroza_joxinilinub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_603c2fc145aab.pdfIn PDF document text
    • http://madamzero.com/kexosaw9dv6t.pdfIn PDF document text
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/tipugoxakonusevi.pdfIn PDF document text
    • https://regogugone.weebly.com/uploads/1/3/4/8/134891767/7954560.pdfIn PDF document text
    • https://buxudirikebipur.weebly.com/uploads/1/3/1/1/131164004/4160240.pdfIn PDF document text
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/3210489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_603611cc12bf6.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/english_grammar_worksheets_for_class_10_cbse_with_answers_2020rz5gw.pdfIn PDF document text
    • http://1xbet-registrat.site/what_is_define_solution_in_scienceejl8u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tukorokibenej.epizy.com/civil_trial_objection_cheat_sheet.pdfIn PDF document text
    • http://povokufav.epizy.com/7828201059.pdfIn PDF document text
    • http://dinixebun.epizy.com/wirobefinodo.pdfIn PDF document text
    • http://rewogaki.rf.gd/tukakizunegemobu.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_off0000f6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B2 5724 bytes
SHA-256: c31229cd631354f5c72863987cb5863e9d744b74fc4a4b5c295775ccae609a48
font_01_sfnt_off00010a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1B 10240 bytes
SHA-256: e1b6a60cc5a1d012daf8ed9c8ca18850d299c1d387f2f6970023a70c03c54a00