Malicious PDF — malware analysis report

Static analysis result for SHA-256 008e034677afe5b3…

MALICIOUS

PDF

88.6 KB Created: 2021-03-24 09:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed8e1caad1a1ba5f786b4a755409d743 SHA-1: e26b337334a006a9da89d36af82f72792b44dc13 SHA-256: 008e034677afe5b3260f8cc15ffb58801c90c8bb4e3dd3dc979044195e991a96
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content, likely a phishing page or a download site.

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
  • 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://druttle.ru/wix?keyword=9-2+standardized+test+prep+quadratic+functions
    • https://cdn-cms.f-static.net/uploads/4377912/normal_602f47f569ce3.pdf
    • http://koteyarn.moscow/60736022593xcid1.pdf
    • http://best-store.club/kevotaninixunkfy8e.pdf
    • https://likixulojuxe.weebly.com/uploads/1/3/4/3/134386003/e7cb699e.pdf
    • http://neojust.ru/dieta_sirt_menuj9opp.pdf
    • https://cdn-cms.f-static.net/uploads/4384301/normal_604376890c9a3.pdf
    • http://lozejebivo.scienceontheweb.net/sbi_exam_calendar_2020_20_download.pdf
    • http://tixesikixux.mygamesonline.org/98901888425.pdf
    • http://nurokojo.mypressonline.com/acupuncture_treatment_points_guide.pdf
    • http://ihsteam.ru/hp_pavilion_dv6_hard_drive_sizegt6dc.pdf
    • http://whalesqpa.fun/concept_map_template_blanka0nmg.pdf
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/3097742.pdf
    • https://vowizata.weebly.com/uploads/1/3/1/8/131856430/pafisuje.pdf
    • http://pifofobexaxel.mypressonline.com/sotapofejoguxasemar.pdf
    • http://carluxepaint.site/traktor_kontrol_s4_mk3_tutorial67j6h.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4c98b2e5-7f94-4dad-9c9c-3e90ad7e992b/kimejenovovojaxemenoxike.pdf
    • http://zorijefugixor.atwebpages.com/princess_diaries_2_cast_members.pdf
    • https://uploads.strikinglycdn.com/files/434a7221-e471-4f9c-ac84-1fa31b8b1a71/wodaminul.pdf
    • https://uploads.strikinglycdn.com/files/c7661972-c5fe-4319-be49-914ef70cd144/epson_wf-2530_manuale_italiano.pdf
    • https://uploads.strikinglycdn.com/files/bcd213a7-74d9-40f3-a3e4-19fa1b9ab6ff/pazavipi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b2d.bin
55f34dbb7550ba6dd8dfdf56981e03d497ca3b5d3895866d4b01c629bd1b4ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2D 5516 bytes
font_01_sfnt_off00012e0f.bin
5ae10aee97378296f17b566a91903c36d8029d80db72e60a70179100e95874c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0F 11276 bytes

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