Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe93f17f978a595…

MALICIOUS

PDF

74.4 KB Created: 2021-01-19 22:01:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 489197bec7768cda4faf7c9f9a3a72e0 SHA-1: 28e70f2fadd9c0d9b494d56add2f14ea969293f5 SHA-256: dfe93f17f978a59540eb22dd7f3b6d59572ea4b08c4e5c492679e0227845b9d2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=mda%20meaning%20law PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459318/normal_5fca7a1c5cd46.pdfIn PDF document text
    • https://cdn.sqhk.co/nokikijun/jhjKiaZ/desi_swag_wallpaper_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogivotosu/bifidjf/heart_starts_beating_fast_while_sitting.pdfIn PDF document text
    • https://safalijig.weebly.com/uploads/1/3/1/0/131070993/57ec7fd2ce8.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/7KHYlhQ/lifeafter_recipes_coconut.pdfIn PDF document text
    • https://rivoliga.weebly.com/uploads/1/3/5/3/135311175/9ef28e2.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/BHijgdt/cut_the_zombie_guts_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/ih2Atg7/30356428287.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416506/normal_5faf2af3cd52b.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/HjbghB9/77107968699.pdfIn PDF document text
    • https://cdn.sqhk.co/bureruverog/fmdjbXV/horse_games_pc.pdfIn PDF document text
    • https://pasorizafam.weebly.com/uploads/1/3/4/0/134096756/libelufefa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fepirag.epizy.com/aashiqui_2_mashup_lyrics.pdfIn PDF document text
    • http://lawupoxag.epizy.com/allegheny_county_us_court_records_civil_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/my_hero_academia_episode_2_dubbed_english.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_off0000e902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE902 4968 bytes
SHA-256: 2441543350e5fea5d3cdf6fbc5559055953967ccbfef8af856c578c4efb05697
font_01_sfnt_off0000f9f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F0 10332 bytes
SHA-256: a54d0a041e56885a95f38aabf997c9268f28e1536df6b9e99930cac232e2b944