Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8e3098671d5bad…

MALICIOUS

PDF

132.0 KB Created: 2021-03-25 08:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4182a591c6f6581d4fa6a9d626190557 SHA-1: 88d614de4c2acb5e218b7096c0d48993d58b8707 SHA-256: 0d8e3098671d5bad95f90d1eff62b1d613182e307792330b1638b91ccc52f97d
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. While no scripts were directly extracted, the nature of the embedded links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/award?keyword=arifureta+novel+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377401/normal_6049cbaadba08.pdfIn PDF document text
    • https://nulepapilix.weebly.com/uploads/1/3/5/9/135957677/7e24656928ca3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_6051848200acb.pdfIn PDF document text
    • http://wigomufeze.22web.org/descargar_whatsapp_plus_6._85_apk.pdfIn PDF document text
    • http://pububasolemi.22web.org/61336005519.pdfIn PDF document text
    • http://pelaberofusej.iblogger.org/astm_a36_08.pdfIn PDF document text
    • http://puditefifu.22web.org/12463715849.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/2500979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_5fe956ae95e08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tutalogivenerok.epizy.com/who_is_the_33rd_degree_freemason.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/babc50e0-4a96-4926-98b4-8ddaa5cf78e4/3919279687.pdfIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_3cd677d2656c4501b0b350f7b9723443.pdf?index=trueIn PDF document text
    • http://dalotatafajadad.epizy.com/46673129665.pdfIn PDF document text
    • http://lilepav.rf.gd/tajewofukesasufibebut.pdfIn PDF document text
    • http://raziwisubuza.rf.gd/foods_that_boost_metabolism.pdfIn PDF document text
    • http://roxegut.rf.gd/hard_trap_hip_hop_beat_instrumental.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/022dfefb-a921-4b08-a165-81fdf51aa770/9645034159.pdfIn PDF document text
    • https://71f68c9c-1037-483c-a0ca-f268b7ddd3c8.filesusr.com/ugd/87fdc7_6d1843aec7cd44438d8aaa3d8a8f92c8.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CF 49648 bytes
SHA-256: 313bb48c940453450064299ff2d8ceeac14b13755041b1ba55d02192a0fcf29f
font_01_sfnt_off0001ab7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB7B 4904 bytes
SHA-256: 2b191f3a0c2097c8be5b43e210c12a8ed51345528a19932c50b9ef89d9240687
font_02_sfnt_off0001bc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC3F 12868 bytes
SHA-256: 530a19eab58f25d81ad1789f28768dcdbd341659cd09ead87110eb9208a42834
font_03_sfnt_off0001e529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E529 18688 bytes
SHA-256: 907860ebfc82505eb3fd55cd74b8a42b9f942e5fe44382b3a0571b3e796e99b7

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