Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd0f486b26f325d…

MALICIOUS

PDF

82.1 KB Created: 2021-01-25 07:03:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fd496b126c898bb3fc3d859781a5dc53 SHA-1: 48b6601ac636291bbf8edf83455cccf55243415c SHA-256: dcd0f486b26f325d8f9d02fe10a70a38f01a641e01d453f4b3d32268c2ad5986
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/wb?keyword=the%20lightning%20thief%20musical%20original%20cast In PDF document text
    • https://cdn.sqhk.co/zodenizekija/sifIagg/gikuw.pdfIn PDF document text
    • https://cdn.sqhk.co/nudabesawi/hhdjgx6/62064651341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5ff2af7f28ff4.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/ihzpD8l/sapofajedixizunakimusopa.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/bhithb5/vuzalifapefezapig.pdfIn PDF document text
    • http://wugafis.66ghz.com/batudaxurubinus.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/c42E8bs/super_penguin_league_3_vietsub_ep_2.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/OspYxjf/59528850149.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/dTTTigP/zujizeferomisedudusigovup.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/gjjaghc/6831213463.pdfIn PDF document text
    • http://voxemukam.22web.org/caddo_parish_sheriff_s_office_new_uniforms.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/fomaralunex/dofe_assessors_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/machinarium_apk_aptoide.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/dell_audio_waves_maxxaudio_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/brts_full_form_in_rajkot.pdfIn PDF document text
    • http://tewidunutazi.rf.gd/crbsi_prevention_guidelines.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/video_interview_script_template.pdfIn PDF document text
    • http://levewome.epizy.com/47040100557.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_off0001057d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057D 5244 bytes
SHA-256: 045f6f3a358195a49b18e7adb51240bef6ecc06ae6a9727816d64b5accbbfc98
font_01_sfnt_off00011730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11730 10544 bytes
SHA-256: 29d5b324b47c2db0763bdba09e993f997c76de6374a617b461acfab9896cda2e

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