Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3447ee1db5142ef…

MALICIOUS

PDF

79.3 KB Created: 2021-03-31 23:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 84023234bc69823e20d4362834cf40a1 SHA-1: 5b6087e29b5c0e680e13fe0a9170cf669e33115d SHA-256: c3447ee1db5142ef51c765c3cf6775d8ff16b33ae05208ca7106873c8dc327bb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 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://zajinet.ru/strik?utm_term=ogilvy+on+advertising+in+the+digital+age PDF link annotation
    • https://kudowelevuk.weebly.com/uploads/1/3/4/5/134585456/b9ea5e9fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498882/normal_60599174988a6.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/dEKiNr6/play_slingo_supreme_free_online.pdfIn PDF document text
    • https://gorokose.weebly.com/uploads/1/3/4/0/134042322/7a991a.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jeAoicm/anatomy_coloring_book_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/ifg11jf/vuleduvuxokego.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/UyDA5kE/4570874872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5fe8fde9dedc5.pdfIn PDF document text
    • https://febelozo.weebly.com/uploads/1/3/4/5/134599394/58b4fd99.pdfIn PDF document text
    • https://wopatozobaw.weebly.com/uploads/1/3/2/6/132682171/446206c1e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416935/normal_604809f39e75d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459936/normal_600eebc391067.pdfIn PDF document text
    • https://cdn.sqhk.co/gozawelesutu/bsJgdXW/download_mix_master_dj_game_mode.pdfIn PDF document text
    • http://padulima.22web.org/javascript_tutorial_for_programmers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ad154fb-43c6-4fb6-b59f-7136d252f46a/zig_ziglar_self_talk_card.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/zifovunu.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/wolfram_mathematica_7._0_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc675aad-355c-4bd5-ae3f-c547e60ba279/big_green_egg_turkey_cooking_temperature.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/animals_lion_wallpaper.pdfIn PDF document text
    • http://saninov.epizy.com/78323795940.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_off0000f27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 5276 bytes
SHA-256: 2616771d22c6aadce969f1fd85244e7ce329a08735a826ea479cea7eec8a562f
font_01_sfnt_off0001046f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046F 15552 bytes
SHA-256: 5a439508e3a3e453d923efb1e72d1ef0a8ee67e0db2d8c05399c437e61ca3aba

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