Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0890d877714dcb…

MALICIOUS

PDF

67.3 KB Created: 2021-03-06 16:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 83662aa3df37486b6cd9773ef35cda37 SHA-1: a39e2e3c4092e4b5a698324dea75b0020c5c0b84 SHA-256: 0f0890d877714dcbd2e1a9671b79663c14b5165fa6b2245e8f392ab73091dc5f
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=simple+country+names PDF link annotation
    • https://danegatazi.weebly.com/uploads/1/3/0/7/130776269/latagiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474997/normal_6011ea29c9224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5fd3c02ce3755.pdfIn PDF document text
    • https://terigemi.weebly.com/uploads/1/3/1/8/131856376/nevujori_xijugox_radilu_vajoxanod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495392/normal_601eaa4ca28f8.pdfIn PDF document text
    • https://tupobufilu.weebly.com/uploads/1/3/5/3/135310482/regadegigamo-gepibaliliwo-mesixu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414342/normal_5fef44ab60974.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/durazakopozatesidawi.pdfIn PDF document text
    • https://todilotifobaw.weebly.com/uploads/1/3/2/7/132712516/gefuxejaledufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_601ab8e6377c1.pdfIn PDF document text
    • https://pusigigapuguv.weebly.com/uploads/1/3/1/4/131438477/1cd4dc6c944c0.pdfIn PDF document text
    • https://degezikesobito.weebly.com/uploads/1/3/1/3/131384018/tidokosoba_rowawa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_5fd0d80a78505.pdfIn PDF document text
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/bolosifatulira_sudox_wapodagapawiv.pdfIn PDF document text
    • https://felekiki.weebly.com/uploads/1/3/4/6/134689652/gesoja_xosogujozabe_dekokisubixak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f2f4a5-d163-42b4-bf89-e96f9516f03b/how_to_make_brother_printer_discoverable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/722eebb4-7eb8-4500-b2c1-8ff550a9097a/how_to_turn_on_ihome_headphones.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_off0000ca37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA37 5284 bytes
SHA-256: 6ac16d70b441c54ac0399ae2b3dc5371648916352c916d2af42c9ec6b5651f95
font_01_sfnt_off0000dc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC21 10648 bytes
SHA-256: fbac8f056a6acb8e2e275aaac8debc113e0bdfc49d8011621222915302e971df

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