Malicious PDF — malware analysis report

Static analysis result for SHA-256 116a2244bd77ec4e…

MALICIOUS

PDF

66.9 KB Created: 2021-02-22 14:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3f7ab640d9203c66f19c4a1455843ad0 SHA-1: e787c4819d721b8020fc53b5cc25713e9784ecb4 SHA-256: 116a2244bd77ec4e66df42c8cff06c89aa952c81e878af2fdb89a3ed15c44dc7
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://bologen.ru/wix?keyword=pandora+free+apk+download PDF link annotation
    • https://widafesisitix.weebly.com/uploads/1/3/5/3/135321065/c439f.pdfIn PDF document text
    • https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/6b8d22a.pdfIn PDF document text
    • https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/1e56c7.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/5670423.pdfIn PDF document text
    • https://pinukavuzufov.weebly.com/uploads/1/3/4/3/134307945/bubazibot.pdfIn PDF document text
    • https://gikotaduxig.weebly.com/uploads/1/3/1/4/131454052/6cd537df47d6b7.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/jbN0hjE/might_and_magic_chess_royale_tips_and_tricks.pdfIn PDF document text
    • https://supenavasude.weebly.com/uploads/1/3/5/3/135397397/f30e46f06546.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/7584378.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426971/normal_5fe1656eaba12.pdfIn PDF document text
    • https://sijoxedewi.weebly.com/uploads/1/3/4/3/134346210/29e6144dc8a55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://romugonixop.rf.gd/bifomugib.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_off0000cb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB27 5016 bytes
SHA-256: 71a597cb03b5aba7c430cdd053701553dfc363a6183e701cd964b5fd11290ec8
font_01_sfnt_off0000dc5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5E 10112 bytes
SHA-256: 37cde5f5f8c63e3166ff52808309dd2684b41225067d5b0db753d4bea4c30d9c

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