Malicious PDF — malware analysis report

Static analysis result for SHA-256 241e9f0abda378b4…

MALICIOUS

PDF

94.7 KB Created: 2021-05-12 18:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2b73bec7240b1fd8e1ded266d0a69b05 SHA-1: 728784672c1f95de60654128e542cff6314e555d SHA-256: 241e9f0abda378b4ee97432a3879e0f6b37cf20c7e177b066ab3e228df004874
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 0.9996

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://nipisod.ru/strik?utm_term=bushnell+binoculars+repairs+south+africa PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487906/normal_6061f81d687b8.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/75045412241.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/glJpMJQ/sarimoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/guhi2if/muzipow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480582/normal_5fe49b5b22cc1.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/Cjegehh/wawilobewetimep.pdfIn PDF document text
    • https://cdn.sqhk.co/liminekaj/jdtShi9/17463217959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_603f362240565.pdfIn PDF document text
    • https://cdn.sqhk.co/bakavaxa/RU3tPJS/rock_music_playlist_best_rock_songs_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_604e751f7fba5.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/leresexa.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/pzRggzv/19744819797.pdfIn PDF document text
    • http://dokukuke.mypressonline.com/vw_customer_service_cardiff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_604e5e7b89db3.pdfIn PDF document text
    • https://cdn.sqhk.co/zirevazul/he3A5ib/scion_tc_dash_light_color_change.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/jJqCujd/90576235970.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/50774937570.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/vofexetajibi.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/56201717830.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/croft_syntactic_categories_and_grammatical_relations.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/texas_principles_of_real_estate_1_final_exam.pdfIn PDF document text
    • http://nigukeja.epizy.com/graco_snugride_classic_connect_30_recall.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001324a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324A 5292 bytes
SHA-256: d49039982ae7363b1633845d0d1f182e489b8919f51b655a8434166a96080b78
font_01_sfnt_off00014443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14443 12100 bytes
SHA-256: 08bb4aa57ff91462da9ca190efafa14bee1fe2830f6ddc81eca3facbaeca7882

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