Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd6fd905c546dcf…

MALICIOUS

PDF

66.7 KB Created: 2021-02-20 11:34:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3cf29a89cbacd8bf55da444f091db39 SHA-1: 83a3a6f7d89f4001efb96892aa23742da1d755fd SHA-256: 1fd6fd905c546dcfb120e10233eddb7b30ed1efab4cf621ad267882d3c1df4e8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=ryobi+12+inch+miter+saw+stand PDF link annotation
    • http://gufutaca1.xyz/vtech_cordless_phone_silent_modeolee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_6024b2dcc5814.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/hgjjThg/total_conquest_hack_apk_android_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491688/normal_60216ee7ea4a2.pdfIn PDF document text
    • https://cdn.sqhk.co/modesinilofe/fhdhjhj/marvel_xbox_one_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/bjhGNme/54577586957.pdfIn PDF document text
    • http://freshremont.com/7051983882060qsw.pdfIn PDF document text
    • https://cdn.sqhk.co/simikimira/5jb0Xhh/47910935532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_60107e9de73e6.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/pigolo/chuyn_sang_file_hnh_nh.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/kumuloxisusabat.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/41471285274.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/chocolate_boy_images.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/31691142496.pdfIn PDF document text
    • http://roxewew.epizy.com/gimaxogelaxevowakas.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/upbte_marksheet_2017-_18.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/1355668363.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/autocorrelation_example.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_off0000c438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC438 5672 bytes
SHA-256: d25313d4b95d981960a0a385d16eb38881bc665e89bf8a7997f40c4d3f71908f
font_01_sfnt_off0000d77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77F 11484 bytes
SHA-256: c9be136b2da8b86fd31f26a28a275b5bde5a34c167fd7552510a4755558ea844