Malicious PDF — malware analysis report

Static analysis result for SHA-256 edafa374601641a2…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 05:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f069bc28694a557a88653ac00e8dd842 SHA-1: 1f52cb8bebdf008e40ad469e720724334dd1cf2f SHA-256: edafa374601641a2efc63a834754a03a67d130434d7dff8552a15e15c749c29f
126 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one specifically pointing to a game cheat resource, suggesting a lure for phishing or malware download. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful websites.

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://xajibur.ru/award?keyword=wizards+and+warriors+pc+cheats PDF link annotation
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/8858814.pdfIn PDF document text
    • http://yoga-italy.space/wikuremirudavapz7s8.pdfIn PDF document text
    • http://grantmedica.ru/77350303098nhc76.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/alimentos_transgenicos_tesiscj34x.pdfIn PDF document text
    • http://idealica-it.website/nedigerakawosavepazag0qf.pdfIn PDF document text
    • http://kleomaften.online/how_to_get_rid_of_smelly_feet_for_goodlcgha.pdfIn PDF document text
    • http://pornbustyvids.com/gktoday_current_affairsbh2dd.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/b0f3b5dd9361a88.pdfIn PDF document text
    • https://tesegape.weebly.com/uploads/1/3/5/3/135387632/3846449.pdfIn PDF document text
    • http://dabopoxele.getenjoyment.net/what_is_the_average_salary_for_an_engineering_technician.pdfIn PDF document text
    • https://wukodotimage.weebly.com/uploads/1/3/4/4/134487216/moloxitud.pdfIn PDF document text
    • http://fajasated.mywebcommunity.org/line_6_firehawk_1500_pedal.pdfIn PDF document text
    • https://winalefumigis.weebly.com/uploads/1/3/1/4/131437210/dadijaw-fonoxuvapifal.pdfIn PDF document text
    • http://kengoru.space/candy_camera_apk_uptodownz8uat.pdfIn PDF document text
    • http://cocobeautybar.ca/53058227505m813b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://newemepakirid.myartsonline.com/15033912131.pdfIn PDF document text
    • http://bufalirafuma.epizy.com/nj_food_stamps_income_guidelines_2018.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_off0000e1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E5 5284 bytes
SHA-256: d8509c87daebb33021b122b81e7d4e51c303cca17db5719714bf95e39c955a7f
font_01_sfnt_off0000f3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FB 10888 bytes
SHA-256: 495d1ac877e03ba084049b6adcbc2d8438784e296b39d2bb147ce219c7af2bf1

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