Malicious PDF — malware analysis report

Static analysis result for SHA-256 1080b401e3f3fa84…

MALICIOUS

PDF

64.4 KB Created: 2021-02-09 15:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 422d986fdb556d75432321bdb279e0f9 SHA-1: f83689edb946c94fcaa4afe52841f380153e7563 SHA-256: 1080b401e3f3fa84184574f23902b1d90cafdb6984edf21ed496d43f33b2c05a
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://maypoin.ru/wb?keyword=beautiful%20babies%20hd%20images PDF link annotation
    • https://cdn.sqhk.co/vidoperife/d8heJhg/80066758260.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/icmwsUg/vegotaduses.pdfIn PDF document text
    • http://diwokaxojizo.iblogger.org/new_hollywood_dubbed_movies_free.pdfIn PDF document text
    • https://fuvukajewub.weebly.com/uploads/1/3/3/9/133999399/dunariwararotesim.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/hWjdigi/totally_accurate_battle_simulator_modern_mod_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463264/normal_5fce0c298010e.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/geja8jg/golf_ball_launcher_gun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387932/normal_5fc753b59dee4.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/HNgfgjb/pigilage.pdfIn PDF document text
    • https://lokawinopigu.weebly.com/uploads/1/3/2/7/132712062/belagoxoxo.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/hgTdhjM/splashtop_wired_xdisplay_only_mirror.pdfIn PDF document text
    • https://dijibelusubif.weebly.com/uploads/1/3/4/8/134871127/cdd9f000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417805/normal_5fea401ad82f0.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/lgNhjig/dexijetozuguted.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/zeoiagc/life_simulator_3_codes_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC055 5412 bytes
SHA-256: 6c8c260bd6317f05ffd9dee7dc9ad698071d26541f7293265484d244f697a33f
font_01_sfnt_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 9968 bytes
SHA-256: 88542a7d21673d6f85c488a0f7cd30a0be634288d2392e1ee80547e56ea1642f