Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de43d9ed2fbf5c9…

MALICIOUS

PDF

77.2 KB Created: 2021-04-02 20:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: cdd7de6c19b676846d51b7209796a8ae SHA-1: d4a85521f78b8229d636b2584579bdaf5b6ac4d5 SHA-256: 2de43d9ed2fbf5c91e9e02084e94c2aeb28ddce5cb35b36b910675a01c4f2b07
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which lead to link farms or disposable hosting. The primary URL, 'https://fokemale.ru/award?keyword=gta+san+andreas+cheat+codes+ps2+download+pdf', suggests a lure for game cheat codes, but the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a redirection to a collection of other PDFs. ClamAV detection as 'Pdf.Phishing.Trojan' further confirms malicious intent, likely involving phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://fokemale.ru/award?keyword=gta+san+andreas+cheat+codes+ps2+download+pdf PDF link annotation
    • http://websporizle3.com/13832910434n59rb.pdfIn PDF document text
    • http://mmmuuuue.space/71882342553blvel.pdfIn PDF document text
    • http://antonioit.fun/mojikajefewusadupetonor04o7.pdfIn PDF document text
    • https://mekuzawejonoma.weebly.com/uploads/1/3/1/6/131606345/buwub.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/tafubobovotixalaguv.pdfIn PDF document text
    • http://wukixijolori.iblogger.org/cch_ct_trang_trong_file_online.pdfIn PDF document text
    • http://agent-ritual495.online/78725084102s24ua.pdfIn PDF document text
    • http://libertinemodels.com/simmons_sd7pk_moduleu7wfq.pdfIn PDF document text
    • https://mafobosapufi.weebly.com/uploads/1/3/4/5/134505980/d5c427.pdfIn PDF document text
    • https://xemageka.weebly.com/uploads/1/3/1/3/131380316/rajodoromaj-natugakaw-mejufisovanav-juvexubudug.pdfIn PDF document text
    • http://bioforce-co.site/zapikomusorofosikozxdfd.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/8585363.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://beganiwalegujas.rf.gd/doluganiruwosofoxuwe.pdfIn PDF document text
    • http://misosemarimo.rf.gd/english_grammar_book_learn.pdfIn PDF document text
    • http://kanomovezizof.epizy.com/dubafeguminivadowizig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daf6c04e-16ba-42b1-a364-569287b663f8/perdona_si_te_llamo_amor_peliculas_similares.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18dc8214-8b66-4083-bcfd-e1fe32a2b6b7/afterlife_lyrics_benee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b36a1fa-33d7-4485-b31e-b36fef6888a4/massey_ferguson_135_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d09c4f-4460-4348-9976-cbcbf56cab26/jibovuxo.pdfIn PDF document text
    • http://jeleruvimubag.rf.gd/tree_of_life_draper_utah_address.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_off0000ec2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2D 5496 bytes
SHA-256: 8324576ada4d8b425f4fa6001382e97de5ed111e8e7a4d9ff348bfdf450e84fb
font_01_sfnt_off0000fef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 13600 bytes
SHA-256: 63895523b3d96701b08c2eedd149accc57f57b2a1dccd159027ca0554625cb30

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