Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5ba5fdb31fbbb1…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 08:00:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9e7ea39e32a774904f090f8815d3d9e6 SHA-1: 70629cc4f3702db7c06be69fc58eff9a00cc724b SHA-256: ff5ba5fdb31fbbb16c78101141d76e6dd30c491d3c7ef7f6773df30b2646dbe6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=northstar+military+study+guide PDF link annotation
    • http://parkji5x.xyz/housefull_2_full_movie_free_downloadlbhfr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428052/normal_5ff89d80c9160.pdfIn PDF document text
    • http://osmosiotzs.fun/chelsea_fc_vs_watford_video9aj4w.pdfIn PDF document text
    • http://tekdouche.xyz/31463004908o3fzr.pdfIn PDF document text
    • http://pressit.fun/937985365680rsbd.pdfIn PDF document text
    • http://musc-media.xyz/ramipafifasugimck1ha.pdfIn PDF document text
    • http://cadenalia.com/8900052605d56b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487409/normal_5ff2977a05280.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/gigixiguxu.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/31467331322.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/pufivomixolotonofofemomeb.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/top_performing_mutual_funds_morningstar_india.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_off0000cceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEB 5308 bytes
SHA-256: 3ad81162ff11b58f81bb9ad64ef9785d36d29df9f52631642ba63bc65b140fe6
font_01_sfnt_off0000dedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 10644 bytes
SHA-256: deb917062d76f636e543adcc08ff08a1ad0435b1b04307471fbb2f1533176a5e