Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ee5015c8f96871…

MALICIOUS

PDF

70.6 KB Created: 2021-03-16 21:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b3d37d9aa8694761ac578e714c8f4ef7 SHA-1: df7583f337cbe260ba4dece7f55dba73770c860b SHA-256: d1ee5015c8f96871fc1dbc7b551057f0015b2b8ccc607d5a9d60d04a03db6620
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one pointing to 'lozipotod.ru', a domain flagged as disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests this PDF is part of a link farm designed to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=byzantine+empire+map+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369502/normal_60348c7316470.pdfIn PDF document text
    • https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/xosis-vugifevip.pdfIn PDF document text
    • https://cdn.sqhk.co/dikizumi/d8Uuhfq/monkey_mania_penrith_vouchers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506170/normal_6007c7e99ce92.pdfIn PDF document text
    • http://supozupewurak.22web.org/110_volts_to_220_volts_transformer.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/HjdvfNa/46168305328.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/gfwDVUl/gamebox_1._0_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/nabaxifow/zXkRhg9/wepon.pdfIn PDF document text
    • https://rogejizerabori.weebly.com/uploads/1/3/4/7/134763318/raful.pdfIn PDF document text
    • http://xikewimuvos.iblogger.org/11728336942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_6043189187bca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/07c841ad-e3c5-4990-afeb-b25f6a4cbcd2/22508527853.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/vikizetovizofumedufifitud.pdfIn PDF document text
    • http://tutafibinow.epizy.com/78703337890.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/ruxipisenijuf.pdfIn PDF document text
    • http://zumoriko.epizy.com/96641780517.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/us_coast_guard_weight_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3803d57f-6f7c-4ddb-a6d1-83acbf70cb5d/1274378649.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/chromatin_condenses_to_form_discrete_visible_chromosomes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CC 5396 bytes
SHA-256: 9ac93d4f7efb8afdec8d63445d1c0e5eaf4e96c20e7cc627226115f689cca01b
font_01_sfnt_off0000db11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB11 10540 bytes
SHA-256: 8ad5228b313c02dde2ee49bc0a5cf8d699fdb7a2e5cba8bda27b8d1cb3b1ab55
font_02_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.