Malicious PDF — malware analysis report

Static analysis result for SHA-256 799ba34803a7ab83…

MALICIOUS

PDF

67.3 KB Created: 2021-02-17 12:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 25f76f884763e05c5df19ba897588a28 SHA-1: b953a56e3b485de426aecf1626c98e4a0ca613ce SHA-256: 799ba34803a7ab83726daaecd78be9a7d7d133b6a56e534ece8b51706560f73c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/wix?keyword=kern+inmate+search.org PDF link annotation
    • https://cdn.sqhk.co/ludozenidi/s4hbifb/let_s_farm_facebook_game.pdfIn PDF document text
    • http://chebsvet.ru/best_3d_racing_games_for_android_20155jyzj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_6006481186bc3.pdfIn PDF document text
    • http://wiinorama.website/formula_1_2020_drivers_helmetszj9fb.pdfIn PDF document text
    • http://talakam.space/557859372107qh9b.pdfIn PDF document text
    • https://cdn.sqhk.co/fokivetezabu/DRicfUh/titan_quest_multiplayer_quests_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/UWidyNZ/alienware_area_51_desktop_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/tesosunimew/hwv7hgn/koxig.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/Ngc6gd3/jozuxezawaxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446633/normal_60011e0f974ff.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/BfxWFja/3342986879.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/jaibDyT/38180724881.pdfIn PDF document text
    • http://5-euro.info/kefegibutavaparagov7sh0.pdfIn PDF document text
    • https://cdn.sqhk.co/kusonemap/jhbhahb/sewoxenenewezusafotak.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/jozetej/class_12_physics_project_on_capacitors.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/toloviwukolew.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/chitta_kukkar_banere_te_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/john_lewis_egyptian_cotton_sheets_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/burukadutusevoseg.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/booth_part_time_mba_employment_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/matelexutigasufap.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_off0000cabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABC 5184 bytes
SHA-256: d10b53afa6155b2b2c5290ed09c98dc17157498691bc75416c64a9bae1deee71
font_01_sfnt_off0000dc3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3B 10552 bytes
SHA-256: 7adf32debf7fc7a13a22a22e8cf59804cb671a8c9543fdebc2eb7343ac751596

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