Malicious PDF — malware analysis report

Static analysis result for SHA-256 334db3ced5bd83a3…

MALICIOUS

PDF

76.5 KB Created: 2021-03-07 13:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6ffba7f94865c7cb20afa6aa52cfbb7c SHA-1: 419af832a286bfd5da8e39431b40fbaaa2111d6f SHA-256: 334db3ced5bd83a3a808454f7987660efc764c2dfb8dfe1becf226967dad61a7
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://nipisod.ru/strik?utm_term=pathfinder+2e+advanced+race+guide PDF link annotation
    • https://cdn.sqhk.co/gixedomawa/japia59/timelafutilitujizadujefi.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/dBPPCgg/zeus_tattoo_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/figotabam/5M8g8gs/spokane_teachers_credit_union_mortgage_rates.pdfIn PDF document text
    • https://cdn.sqhk.co/bulegumu/qghgcHc/41100944678.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/smCHZjh/466968153.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/ha33iim/32209408134.pdfIn PDF document text
    • http://desokore.medianewsonline.com/41523595969.pdfIn PDF document text
    • http://cmb-societe.com/maya_vray_render_settings9qbo9.pdfIn PDF document text
    • http://reduslim-ufficiale.website/adventismo_seculargdvb5.pdfIn PDF document text
    • http://tigibisolefora.mygamesonline.org/75535450503.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/mighghd/movie_night_snacks_ideas.pdfIn PDF document text
    • http://bluebadgeform.com/rilotoxopevogunepowd2rs.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/hhif5Oy/23833218015.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_7055e590abfc44d4b07f345f8c3e13c8.pdf?index=trueIn PDF document text
    • http://saxodanokijaj.atwebpages.com/list_of_irregular_subjunctive_verbs_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/is_echo_dot_3rd_gen_better_than_2nd_gen.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/fallout_4_companions_likes_brotherhood_of_steel.pdfIn PDF document text
    • https://a04ad255-06d6-4b17-97e7-91173d300295.filesusr.com/ugd/6864df_8c4a42863d024b5ca35ca3cb8db1a43f.pdf?index=trueIn PDF document text
    • http://rorokepu.atwebpages.com/xawekanevavul.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/anchorfree_hotspot_shield_elite.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/dairy_industry_wastewater_treatment.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_off0000eeeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEB 5264 bytes
SHA-256: b32234cd4f8277db84b7222a46a5fef0894c59782cd9ad6fac588c99b75b4e49
font_01_sfnt_off000100df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DF 10512 bytes
SHA-256: 65e6d07fd7fd34bbe029598a527158ef455e91eac3c62781bc2d89b3df6af6d7

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