Malicious PDF — malware analysis report

Static analysis result for SHA-256 6739f108017eab4d…

MALICIOUS

PDF

70.0 KB Created: 2021-02-02 07:10:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f5f8841192ae6b90b2af7bd31e726827 SHA-1: cdb62b4645efaa3aa8c9e4996e8de9a1c69a6729 SHA-256: 6739f108017eab4d184128daecfd0ec3c24cc1e564df928be9844cf40ed164b3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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/aws?utm_term=anniversary+cards+images+free PDF link annotation
    • https://cdn.sqhk.co/fosojatesog/iidietF/projectm_music_visualizer_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/paigjwj/prepper_food_list_for_a_month.pdfIn PDF document text
    • https://cdn.sqhk.co/wojusipi/ghjpgcI/2862566824.pdfIn PDF document text
    • https://cdn.sqhk.co/tesikotuk/aDv8hb1/91076661712.pdfIn PDF document text
    • https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/20c12a483d.pdfIn PDF document text
    • https://bigubiforuse.weebly.com/uploads/1/3/5/3/135389938/miwokewuvuvekij.pdfIn PDF document text
    • https://nuzojumikosa.weebly.com/uploads/1/3/0/8/130814298/guxavez.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/6aqijji/kirufuvizepikosaza.pdfIn PDF document text
    • https://pobufulali.weebly.com/uploads/1/3/4/4/134494274/22326.pdfIn PDF document text
    • https://zozizifubigidoz.weebly.com/uploads/1/3/1/4/131409074/dorojesi.pdfIn PDF document text
    • https://cdn.sqhk.co/vijukifezu/0TPQjen/nepikoduzebojofewaguvun.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/ravoruwofoni-fovara-zopofo-danejubikeluzoj.pdfIn PDF document text
    • https://kivepuwepadile.weebly.com/uploads/1/3/4/3/134392404/56a3d.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/didenLk/trials_frontier_cheat_codes.pdfIn PDF document text
    • https://vizumijolotetip.weebly.com/uploads/1/3/5/3/135394273/ed1fc6ee23cd099.pdfIn PDF document text
    • https://zuzilenew.weebly.com/uploads/1/3/4/5/134527977/bonolexozere_zopopedon_sanozemobi_lubid.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/xoxaneral/81548651212.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/fajeda.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_off0000d4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AE 5460 bytes
SHA-256: 583e7a15c4f146f4d0492048edcccc533afabb7364398b6116976cfe5dbe5ea5
font_01_sfnt_off0000e740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE740 10512 bytes
SHA-256: 15ab72a32ceddb3ce3b996a3740f0e1f12ed9dc9cd61f8b60bd36b0da4ddb634

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