Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80f97de9543da45…

MALICIOUS

PDF

71.9 KB Created: 2021-02-22 03:21:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 31359e2f1cab9b6ee6e45a062dd814ff SHA-1: fdd1c186c6f06fec8e054ad239614a1816eecb53 SHA-256: b80f97de9543da4572a9de30c9cf5b77058c495c9eefd73e0817e4d2dc8f5d83
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=eel+river+fly+fishing+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384320/normal_6026b19f44ac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_601d13b244a30.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/ZDphcrK/strikers_1945_2_mod_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/Op7hc50/19100635951.pdfIn PDF document text
    • https://cdn.sqhk.co/vitelodikef/jE7jcmI/zotezoral.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/jchdnqq/barberhood_barber_shop_hair_cut_games.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/a3L5tjb/t-_mobile_store_phone_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485440/normal_5fdd0fce1a3e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5fff9700e0ba3.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/hbL3ONs/34087562986.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/g0jg6YW/snowboarding_the_fourth_phase_controls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_5fd3dcde3d886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406216/normal_5fe7cba87a24c.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/faxaxos/nowanumuba.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/civ_6_rise_and_fall_leader_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/67199014789.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/ragnarok_m_eternal_love_leveling_guide_assassin.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_off0000dd3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3E 5076 bytes
SHA-256: 3f59614e02b46d659a044e8d09ee5b8816508074774fa20e8042e2f074e47195
font_01_sfnt_off0000ee95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE95 10472 bytes
SHA-256: b935120c7c2fddc535c59232ba0b2d53ee9c2c4b2559f65d17f440e383fe24af