Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd34f4a6a4540ed…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 22:28:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9ea9dfd2560e69dba8559967a039abdd SHA-1: d78a547bbb5be8b70ca4dda107995304786c9278 SHA-256: ffd34f4a6a4540ed5f7dc15aee500fdcffc2f24465ea2d8a4380931a3f6de3b6
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=how+to+reset+beats+powerbeats+3 PDF link annotation
    • https://cdn.sqhk.co/wobivada/pjbighc/xowol.pdfIn PDF document text
    • https://zidoboxeped.weebly.com/uploads/1/3/5/3/135324118/2723243.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/maxiluk-nenopodure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483097/normal_5fec33c4c5f23.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/gdy28Pl/57251087765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494868/normal_5fc955458e896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_60156b2b79dfb.pdfIn PDF document text
    • https://nabebumiz.weebly.com/uploads/1/3/1/4/131452902/soritimano.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/gdO0hii/93141078635.pdfIn PDF document text
    • https://meboropob.weebly.com/uploads/1/3/2/7/132740462/1ca34c5b49a.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/jgxVQid/sudasapanimefinilutuxavi.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/03b37612e7db0d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366633/normal_5fcf4886dd446.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zajoneforisomi.rf.gd/bass_music_s_free.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_off0000e1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E9 5136 bytes
SHA-256: 81dc6b1eb21e0f6e7606c08c2cbe7a9bee8638b5b49fdfee46f9633c7b13294d
font_01_sfnt_off0000f37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37B 10428 bytes
SHA-256: b93849b124b8b4edaeabc4fd1fe741c9a8811d7a619a1c6c3a00bd92fb8844f7