Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0841d1a8f171bd5…

MALICIOUS

PDF

69.1 KB Created: 2021-02-26 04:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89184f2ef73cb37828c0985b9417b2d9 SHA-1: 65d06a547851ccbf8f96ff9d38a8ee484eab81dd SHA-256: b0841d1a8f171bd5ac1eef75945e9db3a440c622a44738f85c66f504e8a29f5a
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://baarspo.ru/wix?keyword=peoplesoft+training+manual PDF link annotation
    • https://xedijekotaz.weebly.com/uploads/1/3/1/6/131606072/delusozurajuraven.pdfIn PDF document text
    • https://beborojefep.weebly.com/uploads/1/3/0/7/130739591/82c4e3.pdfIn PDF document text
    • https://loturevigud.weebly.com/uploads/1/3/1/3/131378985/dee742c46229b90.pdfIn PDF document text
    • https://xawimoveparuz.weebly.com/uploads/1/3/4/0/134040397/gezijewez_ramesazev_bagotuvob_gusedidilofiwe.pdfIn PDF document text
    • http://nakanilo.club/julebinn3og0.pdfIn PDF document text
    • https://petavigavixate.weebly.com/uploads/1/3/4/4/134459614/3495966.pdfIn PDF document text
    • https://lanufirosonez.weebly.com/uploads/1/3/4/7/134704233/lexewugarim_woxupizibofove.pdfIn PDF document text
    • http://bofesota.66ghz.com/povutidofodejimakulizer.pdfIn PDF document text
    • https://vuginavoji.weebly.com/uploads/1/3/0/7/130775358/959945.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/8766378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_602ea16d26b9d.pdfIn PDF document text
    • https://zibataluguxomi.weebly.com/uploads/1/3/1/3/131382491/dobafudeteparolof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xivanokajeze.epizy.com/15594777731.pdfIn PDF document text
    • http://bufirapopedodo.rf.gd/finding_distance_between_two_points_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/sikedolumegutodafana.pdfIn PDF document text
    • http://nadurajamewe.epizy.com/car_accident_information_checklist.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_off0000d22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22E 5224 bytes
SHA-256: 5c67bfd0355fb8cab8fadba3185820c629971710d0300f0560a29e27b5712629
font_01_sfnt_off0000e3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DF 10368 bytes
SHA-256: 07470904ee6b81a4ae038b42cb5d2d6bea45c30479329226e3e1f0591fdf9098