Malicious PDF — malware analysis report

Static analysis result for SHA-256 331821d4f2b9c233…

MALICIOUS

PDF

72.3 KB Created: 2021-02-17 12:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7b2e38fdebdcaef2966675e543779d1c SHA-1: 89c332853f8ef3b8bc80fb0b1ecf28db4043989f SHA-256: 331821d4f2b9c2338e4537e254dbd6a10c39f336f3b5acb3db847aef4ed44c9f
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://druttle.ru/wix?keyword=download+openvpn+apk+old+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403561/normal_6003fcf332522.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372384/normal_5ff5cf33279d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fd3db8e48f8c.pdfIn PDF document text
    • http://pawosevisipe.iblogger.org/65540453904.pdfIn PDF document text
    • https://boxenujanazikof.weebly.com/uploads/1/3/5/3/135302290/gasujegibudewet.pdfIn PDF document text
    • http://ropufogesuzazeg.iblogger.org/70322102682.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/hhHVVB2/cake_decorators_design_crossword_clue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468814/normal_5ff24a76865b0.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/XJ5ijjY/slots_online_win_real_money_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474989/normal_5fe0d55d3c70d.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/ihjf3Cu/graalonline_zone_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443371/normal_602c3f84849c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455886/normal_5ffa56451c41c.pdfIn PDF document text
    • https://roxadaxakisa.weebly.com/uploads/1/3/1/4/131437443/8337955.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/wutezigojuxi/fudumizitudegi.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/age_calculator_android_apk.pdfIn PDF document text
    • http://gafejufojivu.epizy.com/47454893668.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/pizudinemafaj.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/manamey_album_song_in_masstamilan.pdfIn PDF document text
    • http://zufarelizija.epizy.com/all_anticonformista_significato.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_off0000ded7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED7 5168 bytes
SHA-256: 26d47f77c52bf418ddb9fa1f1d8c388c91255b61e39b89721a7fea8b9ac2ed7a
font_01_sfnt_off0000f099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF099 10200 bytes
SHA-256: 719b120480bbd096318d0e37d78a0f1eb7fbc6a244459ffbb09e8de4d697d2cc

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