Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75e29714b1a10fb…

MALICIOUS

PDF

105.9 KB Created: 2021-03-21 23:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8b5a5393ee1f56314b14da0ab90e7e0b SHA-1: bc6c45ede72838d42ccec0f717323e996748746b SHA-256: c75e29714b1a10fbf270b568c04f0b8ce583c70c4cbe9317d2c23fca7f114a9d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/aws?utm_term=michael+grant+gone+series+age+rating PDF link annotation
    • http://itawegan.space/42050144128oc85u.pdfIn PDF document text
    • http://ygrash.website/fumenogawugatofw0gsz.pdfIn PDF document text
    • http://ionatr.fun/24432899797ewen2.pdfIn PDF document text
    • http://disconto50.pro/rebajefibny9.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/soxux.pdfIn PDF document text
    • http://vovality.club/basic_korean_word_listwjr4l.pdfIn PDF document text
    • http://alphabitx.com/matudibowematodaxurewe594ck.pdfIn PDF document text
    • http://nowtorrentz.com/dewalt_electrical_licensing_exam_guiwyg3a.pdfIn PDF document text
    • http://lishop.site/49458164841bv7vn.pdfIn PDF document text
    • http://getyourcredit.info/11368023136a8fu.pdfIn PDF document text
    • http://finansi-7.online/switch_steal_unwrap_gift_exchangesvsig.pdfIn PDF document text
    • http://bluebadge-support.com/5649250930r80fa.pdfIn PDF document text
    • http://domainlimax.xyz/belle_meade_plantation_guided_mansion_tourem0zw.pdfIn PDF document text
    • http://lumejaramelu.mygamesonline.org/38064757012.pdfIn PDF document text
    • http://bostpolamos.site/jumimojesifixirifaf0xj2h.pdfIn PDF document text
    • http://fruittea.space/84055154334sjc87.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/43192144376rjyx2.pdfIn PDF document text
    • http://nefritthebestthing.site/stihl_ms180c_easy_start_partsiwpcx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laletanegimiw.epizy.com/ropurorufofezo.pdfIn PDF document text
    • http://xewenofos.epizy.com/analogy_mcqs_with_answers.pdfIn PDF document text
    • http://fexojuvaf.rf.gd/galidamopudurefiru.pdfIn PDF document text
    • http://zoletafexogixa.epizy.com/how_to_take_pictures_with_phone_camera.pdfIn PDF document text
    • http://megigezorozo.atwebpages.com/twilight_render_for_sketchup_2015_free_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D8A 5064 bytes
SHA-256: 00473454d98fdeb80e81daabe8c0359e0d58fd7d627195854ac8c590b072ead4
font_01_sfnt_off00015ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ECB 10980 bytes
SHA-256: 88c95100d2978a8a02d292e58f6ba51b4dc34c0cd37e0f2111acf09efa714aca
font_02_sfnt_off00018459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18459 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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