Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f3a534c43587669…

MALICIOUS

PDF

64.6 KB Created: 2021-01-23 13:21:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7ba77347b2d6e0ad799b875e2c0565f6 SHA-1: c12966bc3c9236424ad36c49b125aadea57afff4 SHA-256: 4f3a534c4358766977676eea15f09a25a19484951d3b9fee0fefc422c094ac6a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=morph%20mod%20minecraft%20pe%20letoltes PDF link annotation
    • https://cdn.sqhk.co/pawosuku/mjhiiic/dj_bottomless_brunch_london.pdfIn PDF document text
    • http://rorezorejadij.iblogger.org/27390225060.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/gDogjie/hitman_sniper_2_domino_kills_in_20_seconds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421040/normal_6001c06c60a68.pdfIn PDF document text
    • https://jirorenuges.weebly.com/uploads/1/3/0/8/130874518/5f412950e986ca1.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/iKI7jb0/super_ninja_nickelodeon.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/gieuhgm/pejafufusiw.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/TxfjgF0/missing_persons_rate_by_state.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/LKjbqhf/23708266357.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/jhsgfgn/directv_losing_channels_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/ddahgge/latest_us_political_news.pdfIn PDF document text
    • https://fisenekapiwu.weebly.com/uploads/1/3/1/4/131437930/516313.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xivutunitilema.epizy.com/bisaya_songs_free.pdfIn PDF document text
    • http://lenegimuni.epizy.com/37477168964.pdfIn PDF document text
    • http://pavinudoj.epizy.com/minolivubulusiwupitizuwop.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_off0000c111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC111 5400 bytes
SHA-256: 29aaf5af16f99e47edc314be2026b1542b56253feb6c4c83f008c94ec9b5e1b1
font_01_sfnt_off0000d34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34A 10084 bytes
SHA-256: 19e51cd913e11209c644bed4f1838c1636d4b99bad191e1d19ec68f6652d7102