Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9e2f6db7360ed3…

MALICIOUS

PDF

81.0 KB Created: 2021-03-26 08:20:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2c80be2d2d03669e9434b28abd6da99e SHA-1: d35f896e94565d36484e0cd2d62855ddf0cf9c3b SHA-256: be9e2f6db7360ed34783c124317bc4e3b2bfb268b5a745889638946ff61a8049
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a significant number of external links, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of multiple disposable hosting domains and the structure of the links point towards SEO manipulation or the distribution of further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/wix?keyword=palm+desert+high+school+graduation+2020 PDF link annotation
    • https://cdn.sqhk.co/zitibidino/ijeQIid/tableau_electrique_maison_individuelle.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/hxgWWje/poweramp_full_version_unlocker_free_download_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374840/normal_604b9d191fe36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464542/normal_6002e8d69086f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481528/normal_6041653b5bc98.pdfIn PDF document text
    • https://cdn.sqhk.co/vemegunir/aolijhj/the_chosen_one_harry_potter_fanfiction.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479923/normal_605711b200a44.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/fZqghkO/61576084183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376354/normal_60219d6b43932.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405638/normal_5ff9c33b37d28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447874/normal_602dd02e40ca1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392442/normal_605d32baea01e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496153/normal_60439768dad0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_bb7f6b7d8a0e4bc1acf04351791bf269.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/scrum_vs_kanban.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/919727a2-1e06-4d41-8aa5-6a03ae45ae0b/why_phone_app_keeps_stopping.pdfIn PDF document text
    • https://be56f97b-0727-4a8e-a141-4155b83e75ac.filesusr.com/ugd/5034d0_69bd9f066c3540059c21c658017fa186.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/lirojafirisidatapifa.pdfIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_ea127badc96a460e91c2239707fe2e86.pdf?index=trueIn PDF document text
    • https://e02212b7-c8ec-4bf5-ba3e-d68a1de675e0.filesusr.com/ugd/7f1d73_ce415c93f4584691bc84723110f0dc58.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/janatha_garage_movie.pdfIn PDF document text
    • https://662517ce-f374-4037-aebd-99b1dbe00103.filesusr.com/ugd/0c4177_0b58450e5dde445dabd72c53f17b5a1f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f119bd6-1bf0-4dfb-9b8f-b26be0cc95d4/jeroxarituruzaxozekaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/344817f2-85a1-4a70-879d-d988dd8a001b/bufovubovibadod.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_off0000fd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 5628 bytes
SHA-256: 26b68c4283e0094cbfee5dea914696a53f3e9eebbd85be1d566f385f8e855cc4
font_01_sfnt_off00011075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11075 11240 bytes
SHA-256: d8048ff66b54aaee532d3d83c75531773b352f22948e0af3c9b7c69cfb2230ef

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