Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36f42c8a180e6fa…

MALICIOUS

PDF

70.6 KB Created: 2021-01-28 05:22:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7f402b030aeb2d69eb387b755edd2045 SHA-1: 7a17797b60cb891887f66d0ea4f518bab1c58e1a SHA-256: b36f42c8a180e6fa592a30e66f5e9c953a16c2c8dfbf5f8bc9beb7414765baba
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=shelter%20island%20real%20estate%20penelope%20moore PDF link annotation
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/fopixefom_xowaropovar.pdfIn PDF document text
    • https://famixarusefon.weebly.com/uploads/1/3/4/3/134396739/vejodeleki.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/5641606.pdfIn PDF document text
    • https://cdn.sqhk.co/sugifila/ehhigLE/we_heart_it_app_store.pdfIn PDF document text
    • http://salearea.pro/kurakuzugim0q6k.pdfIn PDF document text
    • https://mizavuzozubex.weebly.com/uploads/1/3/4/7/134730625/vugofadabobagavozi.pdfIn PDF document text
    • https://lonexuganaj.weebly.com/uploads/1/3/1/8/131856054/f56e7511.pdfIn PDF document text
    • https://bebojeraje.weebly.com/uploads/1/3/5/3/135302211/162488.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/qmhhsSw/14565372570.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/Ichijfi/roviwuwetowukitof.pdfIn PDF document text
    • https://wanesutilujat.weebly.com/uploads/1/3/4/8/134868149/zidorilenux-viwow-febunod-tamigufudufo.pdfIn PDF document text
    • https://dosogomufafana.weebly.com/uploads/1/3/2/6/132696174/abbc489f3615996.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/zupenafud/power_amplifier_circuit_diagram.pdfIn PDF document text
    • http://pinezininefos.epizy.com/xenibab.pdfIn PDF document text
    • http://kujujigufa.epizy.com/jodututojop.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_off0000d639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD639 5304 bytes
SHA-256: df6ab1dd32d6efb22140b422aa4f90c9cd3d7ecbe561481c3cb60523a9f96e5a
font_01_sfnt_off0000e812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE812 11572 bytes
SHA-256: c6679486383df7e0e7816660d1bce185ff21b367c8c2c1a528d6efdb7052b396

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