Malicious PDF — malware analysis report

Static analysis result for SHA-256 979d8940581d64e0…

MALICIOUS

PDF

68.1 KB Created: 2021-03-15 13:53:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9f3d5c0e9218ac82218c1b608de6323b SHA-1: b058cabc4b50f8ef3520f81610e4b9813ab2363d SHA-256: 979d8940581d64e049e1ae1300165638c3fd315709e12d3043859eb871656e65
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=dewalt+12+inch+chop+saw+with+stand PDF link annotation
    • http://funofuzifige.iblogger.org/tajujunawodow.pdfIn PDF document text
    • http://mp4.design/302863154789uupm.pdfIn PDF document text
    • https://lalojitewimagix.weebly.com/uploads/1/3/5/3/135304200/1b4ef00c9335ae.pdfIn PDF document text
    • https://gusizamavuva.weebly.com/uploads/1/3/4/6/134629738/108515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374852/normal_5feffe775093a.pdfIn PDF document text
    • http://faceit.su/sulodawizoxunejelav366qe.pdfIn PDF document text
    • https://zobatovegu.weebly.com/uploads/1/3/0/8/130873738/pulazu_jobunisejiba_kuledolerifom_dafoli.pdfIn PDF document text
    • http://sun-italy.space/how_to_open_spreadsheet_in_macbookszq7j.pdfIn PDF document text
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/dezopugenewonav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_60208f4a84cce.pdfIn PDF document text
    • https://lulegosepo.weebly.com/uploads/1/3/0/9/130969478/4475423.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/79781386668.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/can_jane_the_virgin_speak_spanish5fafl.pdfIn PDF document text
    • http://clebohets.xyz/how_do_i_contact_zagggipoi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7b806e58-2e0f-4c22-b5e1-e0f71c4d6e86.filesusr.com/ugd/8da65f_83a286c4b5ef4876b820166737bd055e.pdf?index=trueIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_44d3ffe1fa7245cc92fd0c71b4b4337c.pdf?index=trueIn PDF document text
    • http://wawutanow.epizy.com/futabakedigewijonirumu.pdfIn PDF document text
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_b5d09ba7292a45de86b9c7fc7f1cabee.pdf?index=trueIn PDF document text
    • http://sefowolo.atwebpages.com/schaums_physics_for_engineering_and_science.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_off0000cbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF6 5340 bytes
SHA-256: 8ec7d5527f994cf820030d304c374966aadf026e94ff57162fb0bcf06362bf23
font_01_sfnt_off0000de43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE43 10376 bytes
SHA-256: 994c800719321beb2e6e64a52231b2b4f29b2150f93b42f52a0c63cd888ef860

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