Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4448ab969841a2…

MALICIOUS

PDF

70.2 KB Created: 2021-03-19 21:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f603308659305e864491ded6aefa5db2 SHA-1: 97e13f154716de4e5faf658f84ba4325bf334113 SHA-256: bd4448ab969841a296d13534c46d67ded69621ad6d06a42e4069c8e255c8e52d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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/award?keyword=axis+cable+gland+catalogue+pdf PDF link annotation
    • https://cdn.sqhk.co/lexujowina/J8jeogd/do_not_touch_willie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_6030370c2c9b9.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/hkgfyhi/kapisuxamowabatimesovu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_6011bef3e930f.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/brimstone_missile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453890/normal_6026f3a17f01a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464319/normal_602c462f0de0c.pdfIn PDF document text
    • http://nateribebomulaz.medianewsonline.com/importancia_de_la_tecnologia_en_la_agricultura.pdfIn PDF document text
    • https://cdn.sqhk.co/tevimuwijile/jgrwgc4/sanafesizo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427093/normal_600cf173779a1.pdfIn PDF document text
    • http://rogevunesopu.medianewsonline.com/vasujetixe.pdfIn PDF document text
    • http://korefubelexusiz.medianewsonline.com/77563750322.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1e1b468e-abe3-474f-a231-e847ffc6ed5f/55751876268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41531970-c705-4118-a839-b2afe1bf2ecf/66275155887.pdfIn PDF document text
    • https://1a6c606f-1efd-495f-9370-57f425d809fd.filesusr.com/ugd/1be480_893bf5c5b000465e98157d0d747809af.pdf?index=trueIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_ad0009cd52e4468f8825c883f9e18a48.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AE 5304 bytes
SHA-256: bc0403899be9a4b59db452ba44a6413477e86a9652e77b1a3fb5a03c422c052e
font_01_sfnt_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 10468 bytes
SHA-256: 1889f3824a654a7bcffa9e4751f0bb80643ba6c277c58029a779307dc1efa302
font_02_sfnt_off0000fd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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