Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d518f80436dffbf…

MALICIOUS

PDF

70.2 KB Created: 2021-02-27 00:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: af9eb9a77d8739fb0815c499eb236018 SHA-1: 36de3f7ff2cebe175cbd9d87891f7ff0cd3db88b SHA-256: 1d518f80436dffbf62f8968ec105713e951ff963c003db9c747530dbb760446d
196 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.
  • 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.
  • 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/award?keyword=never+fade+away+lyrics+meaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420587/normal_5fe30ab019883.pdfIn PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/fuzure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5fe6a8b554626.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/dstLBqC/brain_work_physics_puzzle_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/jjjefFR/zivukegawifeli.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/pgghfhd/star_wars_the_327.pdfIn PDF document text
    • https://cdn.sqhk.co/tetaxekumipi/hTigJaR/brazil_fifa_world_cup_2014.pdfIn PDF document text
    • https://menanotiji.weebly.com/uploads/1/3/4/3/134322389/7438883.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/VibgoHx/fusodiv.pdfIn PDF document text
    • https://cdn.sqhk.co/gilubibawi/j8gcijm/hello_neighbor_2_xbox_one_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/HjgWje4/zoluxuzinaduxovedagoli.pdfIn PDF document text
    • http://kanshoper.site/744674852319lnz8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5ff3d14810a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5fd3bf6ce8704.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/ghfGhcX/e-_wallet_meaning_in_computer.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/best_wilderness_survival_tv_shows.pdfIn PDF document text
    • https://cdn.sqhk.co/kazaluxi/8gigg3a/99145029157.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_off0000d871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD871 5564 bytes
SHA-256: 3c34b1dde41d97b65afb3302dd6e90225eb662c389a19c10576e0a8fa56efaeb
font_01_sfnt_off0000eb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6F 9368 bytes
SHA-256: 36fda46dbdf3dcba86212d9c9845ac95e5d80f91029ac2228aa0fe176fc62e62

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