Malicious PDF — malware analysis report

Static analysis result for SHA-256 00698e28df020963…

MALICIOUS

PDF

77.8 KB Created: 2021-01-21 15:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b89a0b82efcbfafdb89504e9c61008c6 SHA-1: ff67e972c8975eb5ec83ff3e5b2b392991d4c639 SHA-256: 00698e28df020963ea1034ec05f94df772ab561ff027f6fccc7f93eb4812562d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

Heuristics 6

  • 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.
  • 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://traffine.ru/123?utm_term=que+es+transparencia+en+formacion+civica+y+etica PDF link annotation
    • https://site-1238560.mozfiles.com/files/1238560/cheat_engine_for_gta_5_pc.pdfIn PDF document text
    • https://site-1177421.mozfiles.com/files/1177421/nenekikamepile.pdfIn PDF document text
    • https://site-1177918.mozfiles.com/files/1177918/7440005219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5fa4872b8725f.pdfIn PDF document text
    • https://getiwojaxewife.weebly.com/uploads/1/3/4/0/134012456/mejekis.pdfIn PDF document text
    • https://site-1168290.mozfiles.com/files/1168290/11407275017.pdfIn PDF document text
    • https://site-1168494.mozfiles.com/files/1168494/linkedin_careers_software_engineer.pdfIn PDF document text
    • https://jewefero.weebly.com/uploads/1/3/1/3/131383264/nivuxataki-gozinisimar-vigetu.pdfIn PDF document text
    • https://cdn.sqhk.co/jokalirubore/gfiaTjg/nuzutagifesawetuwuwunibat.pdfIn PDF document text
    • https://nadarikiwuxat.weebly.com/uploads/1/3/2/7/132712530/vipelizovedede_netotelu_watefomapati_ratipibi.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/7795725.pdfIn PDF document text
    • https://nefupoxuwuridek.weebly.com/uploads/1/3/4/7/134747690/12ff3f.pdfIn PDF document text
    • https://romadixisom.weebly.com/uploads/1/3/2/6/132681692/pekuzeta.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/bii09ii/ad_maker_video_editor_explainer_video_maker_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ribegibonot/hfgjhfE/stratego_single_player_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/8Vds8Sr/shell_clubsmart_app.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/jdDkcgc/biludaturebo.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/wivizorokuw_tuwojifed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF80 5352 bytes
SHA-256: 20a4c6a131b52f147e24801865db797b562cf06d99c8c1625f1328bb6836b9ed
font_01_sfnt_off000101ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AE 11672 bytes
SHA-256: c97340e5afb74566879f25e87876ba61ccd7cb5dcd187a6312c004ebcf30d899

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