Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d0d8ab5f5c655d…

MALICIOUS

PDF

69.8 KB Created: 2021-02-17 19:36:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e73550795ab7b9182b338bbaea6a3d5e SHA-1: a0a15eb90ee4968d42924e8cdc677e5c9bf73c60 SHA-256: a1d0d8ab5f5c655d25ca9692186d696422676ded776e05229a346bff5841e17a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=staples+direct+deposit PDF link annotation
    • https://cdn.sqhk.co/geruxibab/cWjbhiy/ice_scream_3_horror_neighborhood_game.pdfIn PDF document text
    • https://kalogipewaga.weebly.com/uploads/1/3/4/5/134595512/9eec127e8b0c.pdfIn PDF document text
    • https://cdn.sqhk.co/wikelere/OUgjgcn/best_compound_bow_target_arrows.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/jhdIje2/real_dragon_simulator_3d_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/xhgKAjc/49742892756.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/RBi5tuP/bootstrap_crud_template.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/Xgcgjkb/voligovodojalusap.pdfIn PDF document text
    • https://cdn.sqhk.co/tumexifukevu/fJijhaL/58570419691.pdfIn PDF document text
    • https://lorotorerusut.weebly.com/uploads/1/3/1/4/131452969/2698689.pdfIn PDF document text
    • https://lubefapezixa.weebly.com/uploads/1/3/1/3/131398117/gakotikujipu_pefago_sonutiwezagi_bowifewapok.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/EXGUggQ/closeness_in_french.pdfIn PDF document text
    • http://bogavevi.22web.org/24221210620.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepibatavike.rf.gd/33734918773.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/router_guide_bit.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_off0000d47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47F 5168 bytes
SHA-256: 8287d1884a35dec6a06b27adba5076f76d175d8de466875a1a6a806c0236bdd9
font_01_sfnt_off0000e61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61E 10708 bytes
SHA-256: ec777b09df1ec9097f72955fdc4e8dfe3f842a1bf4c797cce4042edd0a343bf7