Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9e757597e2554a…

MALICIOUS

PDF

66.5 KB Created: 2021-03-03 00:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bf9e535d24f27dbad65f564235489707 SHA-1: 1a7407937a1fa4e6a73de26584f00a07ace3f304 SHA-256: ce9e757597e2554a18267426c801fa8074a1843185f3f7719ba457b8c5a45bc7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=reciprocal+trig+ratios+worksheet PDF link annotation
    • https://cdn.sqhk.co/vibisidumes/Xvjbgga/lemegituk.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/dWBhjUR/toggle_meaning_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/chgf6ij/japovevujutebagaduso.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/klggkie/onedrive_web_download_slow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5fe6f2414d27e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ff028683c78d.pdfIn PDF document text
    • https://doxuvufunufake.weebly.com/uploads/1/3/0/8/130874670/rogibidej.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/dIgenij/texileb.pdfIn PDF document text
    • https://wedezetepeb.weebly.com/uploads/1/3/4/5/134528952/b2e5e41aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_603ebdac4d219.pdfIn PDF document text
    • https://cdn.sqhk.co/koporikog/VghheTP/mebogafixasajebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464327/normal_603af66eda0e5.pdfIn PDF document text
    • https://monaxakapivelor.weebly.com/uploads/1/3/1/1/131164425/784263.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/dEhathh/zubifunalekugufapaf.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/hjjfljf/gubazege.pdfIn PDF document text
    • http://netlysy.online/ana_britannicar8z07.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/ijt84jf/63088644328.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/jbjjdhf/xoburivizaxosaget.pdfIn PDF document text
    • http://bullbananavannaone.xyz/782680534970n4hm.pdfIn PDF document text
    • https://wuwogijate.weebly.com/uploads/1/3/4/8/134886767/8575920.pdfIn PDF document text
    • https://cdn.sqhk.co/naruxibe/anheha5/jewel_hunter_lost_temple_cheats.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC823 5360 bytes
SHA-256: 681d43a9079c8f9cf4f33ac52831aaf85d5f5e9d3df49e13bf14206491dc5ddf
font_01_sfnt_off0000da70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA70 9984 bytes
SHA-256: 6ef1d0035c79ab2e2042dd4702f4071220a914918db8a6f9403d5c838edfeb35

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