Malicious PDF — malware analysis report

Static analysis result for SHA-256 6807aa24d6e57f2c…

MALICIOUS

PDF

70.4 KB Created: 2021-03-04 16:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a4d47be5c4f319437d987413bcb63881 SHA-1: c38cc4eaeef8c0b447475fd030dc6afdf944f0ab SHA-256: 6807aa24d6e57f2c4dd47631401ca0ef6f9d306140d57eac65b1238fb7626d85
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=nas+full+circle+feat.+the+firm+az+foxy+brown+%2526+cormega+lyrics PDF link annotation
    • https://jumuwubugunitus.weebly.com/uploads/1/3/1/0/131070493/zobidutekifabifanagi.pdfIn PDF document text
    • http://sellamorem.com/12848121912rcolh.pdfIn PDF document text
    • https://xinogibujijinak.weebly.com/uploads/1/3/4/2/134235465/zilotisusopizuvago.pdfIn PDF document text
    • https://kixakusafi.weebly.com/uploads/1/3/4/8/134891224/01e12331.pdfIn PDF document text
    • http://trycabinets.xyz/jovulolw1fm6.pdfIn PDF document text
    • http://digtalcaliper09.xyz/34858886854pydtp.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/d3458cc581.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/413d4.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/timegimu_vakejazutegefi_ferutoz.pdfIn PDF document text
    • http://edaruzal.xyz/xexorotasadogevuxadafesax8lfr.pdfIn PDF document text
    • https://vegekonewipure.weebly.com/uploads/1/3/5/9/135964828/06e9d675b129f.pdfIn PDF document text
    • https://veduwasa.weebly.com/uploads/1/3/1/6/131637496/nerej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://risopufegutala.rf.gd/xotanedax.pdfIn PDF document text
    • http://fetenebepoxoso.epizy.com/computer_science_engineering_courses_online_free.pdfIn PDF document text
    • https://8e8ef6ac-913c-489f-8395-c30730e7ba0a.filesusr.com/ugd/f39c52_835c0926652f4da59b8b281e9f98a364.pdf?index=trueIn PDF document text
    • https://f8340159-69ce-4309-ac43-521e9a8475b4.filesusr.com/ugd/bc0b97_332810798f5249abbc50f6c35be36dad.pdf?index=trueIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_c8952f17cb5f4a858827070f23c1b56a.pdf?index=trueIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_fe4f4e05587f4c97894bb8fe00785b2e.pdf?index=trueIn PDF document text
    • http://rejamokag.rf.gd/renofimiw.pdfIn PDF document text
    • http://budibisila.epizy.com/dutikifunuferitoturin.pdfIn PDF document text
    • http://jutatodimat.epizy.com/xigugivowaxobiferijete.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_off0000d654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD654 5576 bytes
SHA-256: 592c19f607eeb9198c3ce7749b16fc547ee142fba848b69cda87f4735dfac8cd
font_01_sfnt_off0000e94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94C 10148 bytes
SHA-256: 008020f60f4c0d6a025c800041e1d6889b8fc6f2a6f7a1476f36a679dd09f650

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