Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8dda8f5171c8b3…

MALICIOUS

PDF

68.6 KB Created: 2021-03-03 17:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d70fb207041f3624cefe6156f42f4e9a SHA-1: e84352931e281c0ec7ecef6cac57aefc10bd419b SHA-256: cc8dda8f5171c8b35f34fbf45e5764e95367c6e75e2f35f58264a0eae3c330d0
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://fokemale.ru/award?keyword=kenmore+front+load+washing+machine+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476429/normal_5fd241d9c489a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372721/normal_5ffe919febaac.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/EHZsgih/funny_birthday_gift_ideas_for_girlfriend.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452389/normal_5fe1fd343bc6e.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigizakeku/pjsjbje/nerorizejivu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/jd7fnhe/jacob_s_super_adventure.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/idjh3as/xinaliperejumaxizo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454043/normal_5fe4d9df21f5b.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/marlin_60_scope_mount_size.pdfIn PDF document text
    • http://vizudawu.22web.org/where_do_you_learn_wilderness_survival_skills.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/IgjijZ8/saluvitiluvenubifo.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/sazixipame/sericea_lespedeza_planting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/81954882914.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/dead_by_daylight_pc_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/visite_guidee_citadelle_de_namur.pdfIn PDF document text
    • http://gojetovumivet.epizy.com/29561127077.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_off0000cffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFE 5632 bytes
SHA-256: aa39ddbab7bfc4b2d763d619b9607a9365030eeafbebeabcc44528f9dde47c76
font_01_sfnt_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 10200 bytes
SHA-256: 9d8a1b41932686012eb1275a8f7fb0644f95bce0c646f3b9b90e477868674025