Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5652d29d0e7715…

MALICIOUS

PDF

82.9 KB Created: 2021-02-24 19:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7ed05f5d291867e75bea923512130153 SHA-1: 8687c828d45534e93cd94cebe8ba1817701d401c SHA-256: ad5652d29d0e77153f08a4653558a3720c37649aced4af8ecc7f43327e572c9e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wix?keyword=adidas+high+tops+soccer+boots PDF link annotation
    • http://taranif.22web.org/adani_port_vessel_berthing_report.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/ibFjfig/checkers_2_for_4_deal.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/a8tbDjf/dazagomuxozafofurewas.pdfIn PDF document text
    • http://italia-doc.space/casablanca_guitar_tab7tfzo.pdfIn PDF document text
    • http://samyog.ru/focusrite_scarlett_2i4_2nd_gen_manualzos5u.pdfIn PDF document text
    • http://everydays.space/super_mario_kart_racing_downloadhi89e.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/hcYhb2A/cross_linked_hyaluronic_acid_eye_drops.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/96_ford_ranger_idle_problems.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/fovezewi/designer_resume_templates_word.pdfIn PDF document text
    • http://digotadegijo.epizy.com/8845243581.pdfIn PDF document text
    • http://temekem.epizy.com/preschool_program.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/how_to_change_the_drive_belt_on_my_husqvarna_riding_mower.pdfIn PDF document text
    • http://gokamevagared.epizy.com/74739531438.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12F 5432 bytes
SHA-256: 94f70af8e29da4749f382583b0badf38525d1fce272fa717f0c9ae0443d26efc
font_01_sfnt_off0001039e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039E 10908 bytes
SHA-256: 00afe5b0845a0ad874181175c2f3af2e121e2cebf3a45b85a09927a8f4f9adc8
font_02_sfnt_off00012921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12921 16232 bytes
SHA-256: 1d4ebd634e9a4b1afc3ba2e660f7abdbad7ecfb3c20c2fb0daf688bec4f9a1d5

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