Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a2ecad2d137c44…

MALICIOUS

PDF

78.3 KB Created: 2021-03-29 21:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ec5641d26554585e46710ebf28697a1e SHA-1: 46a3167d226c77fe71d5a985fc7422aa6f0a6846 SHA-256: 38a2ecad2d137c441750a744f4a8ea8081ec8208abad6c996ef80bc845fda452
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URIs point towards a malicious lure designed to redirect users to potentially harmful content.

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://xezojetit.ru/award?keyword=beautifulsoup4+tutorial+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451555/normal_600ced672f0f5.pdfIn PDF document text
    • http://vertitribe.store/what_is_electronic_media_and_exampleshwirv.pdfIn PDF document text
    • http://koguvagad.22web.org/77132913325.pdfIn PDF document text
    • http://hairsprof.ru/html_and_css_learn_freeo6dtn.pdfIn PDF document text
    • http://xokapik.mywebcommunity.org/21169373536.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/how_to_shoot_from_a_deer_standmrrdg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_605501503b1c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_604f3f5b4863a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403687/normal_6008d41a0cd2a.pdfIn PDF document text
    • http://aydym.club/sisopabufebexami7yu4c.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/94213407240.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426075/normal_5ffc6fab29e3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393889/normal_5fe1176d85223.pdfIn PDF document text
    • http://petersikdar.com/25609466984hz1vx.pdfIn PDF document text
    • http://tuvosudokalidu.scienceontheweb.net/16594592931.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tesotiwapax/aiesec_logo.pdfIn PDF document text
    • http://pinakebe.rf.gd/95632139277.pdfIn PDF document text
    • http://gozegatunefafet.epizy.com/kenmore_dryer_door_latch_repair_kit_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/custodian_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/fexid.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/27010279983.pdfIn PDF document text
    • http://zatesivixif.epizy.com/givanujuxutubafi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE555 4948 bytes
SHA-256: 95fad90d7f2a262e9af3a993308babb47600e74426a0e52d66ed6e38be12d0cb
font_01_sfnt_off0000f643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF643 11528 bytes
SHA-256: 7a2f55ef850687a41d4a37073853d4e39e848d18b77fe67ff2f89d8b7f3c93a2
font_02_sfnt_off00011c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C60 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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