Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f316680a2a8b1d…

MALICIOUS

PDF

172.7 KB Created: 2021-03-24 18:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 736f473ea91d6bfce7c73f46df9db5f2 SHA-1: 8e07b6e852e7b2010a0491260df77956603cfa40 SHA-256: f0f316680a2a8b1d29a576970d3f790469ff7af1503a89bbc6ce8b8bc3993141
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one pointing to a suspicious domain ('fokemale.ru') that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 5

  • 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 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/wix?keyword=soldier+front+rankings+nfl PDF link annotation
    • http://bluhgang.best/292265266194gach.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_602791ba245d6.pdfIn PDF document text
    • http://jisutuxoxaza.medianewsonline.com/alter_ego_plus_b2_guide_pdagogique.pdfIn PDF document text
    • http://everydays.space/14593911720014g0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_6041c1a699e30.pdfIn PDF document text
    • http://bokaxakoz.sportsontheweb.net/anticorpo_monoclonal.pdfIn PDF document text
    • http://dusibarupuguli.medianewsonline.com/40647963476.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477147/normal_5feb0b8c519ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458145/normal_5fd2a3c6d7467.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/pamudanesajatuxodowe.pdfIn PDF document text
    • http://tiktokfrance.fun/81568520527enzml.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5fc983d43ce30.pdfIn PDF document text
    • http://filuniguwol.22web.org/international_marketing_jobs_remote.pdfIn PDF document text
    • http://benosetib.iblogger.org/16190669745.pdfIn PDF document text
    • http://pravagims.net/88886873182e59kd.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/wizened_in_a_sentence_adjective19gk3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vufigoreg.epizy.com/punctuation_worksheets_high_school.pdfIn PDF document text
    • http://gafodix.myartsonline.com/7823281916.pdfIn PDF document text
    • http://xovanesoku.epizy.com/dumajisafu.pdfIn PDF document text
    • http://bologipegokofi.epizy.com/todebegenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a625e85a-fec4-469a-befe-751d15ebd703/ps4_games_in_january_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cac2e45-f82d-4b69-b09e-72e4de509f9d/grammaire_mthodique_du_franais_download.pdfIn PDF document text
    • http://lutuxulumoxi.rf.gd/tecumseh_engine_carb_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8a4dce-12de-4631-a161-2e7ea81e2a5a/how_to_run_table_topics_toastmasters.pdfIn PDF document text
    • http://liwusetokabozil.epizy.com/numube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4084b5-f8d9-4de0-ab21-403b7bd20a13/how_to_do_a_dog_temperament_test.pdfIn PDF document text
    • http://wipovevoliku.epizy.com/xijoruvojoramapumemu.pdfIn PDF document text
    • http://givutiba.rf.gd/wexofusel.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24F5B 5244 bytes
SHA-256: 6551053fc539eb15a5bdb176b974fcf49cd9f860194098d3f7669b51696be7c8
font_01_sfnt_off00026142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26142 13580 bytes
SHA-256: bfdfacc9647699a4454f62a296629ab8e7a01c96bce143f6069a64d5ec316468
font_02_sfnt_off00028d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28D8A 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7