Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c08cb69dae28f34…

MALICIOUS

PDF

62.5 KB Created: 2021-02-22 16:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d0061269e2c113eeb606d1cf0d297de4 SHA-1: 00bf3c4d54af4527769af8c0231494e41332ee41 SHA-256: 0c08cb69dae28f34e1d72c7198042a42a990c9dd05d959e2e4f1165e27d02948
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://druttle.ru/aws?utm_term=how+much+do+health+care+assistant+get+paid PDF link annotation
    • https://pulisojoperun.weebly.com/uploads/1/3/4/4/134487891/savave-gelifowirogeda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_602eeaaca2af2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5fefe883c3a7c.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/4dfd99c6ec12.pdfIn PDF document text
    • https://lekumoga.weebly.com/uploads/1/3/2/6/132683130/4107685.pdfIn PDF document text
    • https://lufumapapolag.weebly.com/uploads/1/3/4/3/134353855/vuzuzozaluxokomumoje.pdfIn PDF document text
    • https://xujikipige.weebly.com/uploads/1/3/1/3/131379844/nekovolituwupoz-waselebimeden.pdfIn PDF document text
    • https://seporarutigofu.weebly.com/uploads/1/3/2/7/132741198/0b1c94de78c3373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449178/normal_602561cf24f82.pdfIn PDF document text
    • https://nosisakapu.weebly.com/uploads/1/3/4/7/134773138/a28d8b3527202c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_602aabf45c1c6.pdfIn PDF document text
    • https://devumevone.weebly.com/uploads/1/3/4/5/134589636/jolimitiku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417037/normal_5fff93e542faa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413239/normal_5ff078f4b3a2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuwuzokapa.rf.gd/10817683030.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_off0000b8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D8 5540 bytes
SHA-256: f1150293d45cba266e26dbcf5692902adf52575ecf2da516e743e318a56cfa0c
font_01_sfnt_off0000cb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB93 9808 bytes
SHA-256: ca21ac6be6a6ef7e15ed2ef87d5c034655a34f7133c3ba4cd67c2a38bf5f3cf8