Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7865720daae080…

MALICIOUS

PDF

66.8 KB Created: 2021-02-28 09:35:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f446078a7cd78a5c20b151ba59417fb9 SHA-1: e9ffd3f63597948635e0e7a5475e09f0b72ef257 SHA-256: 6b7865720daae080c00e9b9ecef882340e1c3051b0711211cb7c6dc2e6c1a16b
124 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious. It contains numerous embedded URLs, many of which point to disposable domains and are presented as search results or downloadable files, suggesting a phishing or scam attempt. The PDF structure and embedded links indicate an attempt to redirect the user to malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8438

Heuristics 4

  • 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
  • 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://nipisod.ru/award?keyword=my+toshiba+smart+tv+remote+stopped+working PDF link annotation
    • http://depofukug.iblogger.org/transitive_and_intransitive_verb_worksheet_grade_4.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/64563081873.pdfIn PDF document text
    • http://myfavoritesun.xyz/vofowajibofejolvp2zg.pdfIn PDF document text
    • http://limevekobo.iblogger.org/taletisejulekiwitojigu.pdfIn PDF document text
    • http://janexik.22web.org/how_do_you_write_a_self_appraisal_example.pdfIn PDF document text
    • http://maxobujixeweden.sportsontheweb.net/98285331696.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/89856299032.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/what_is_artificial_asexual_reproduction_in_plants.pdfIn PDF document text
    • http://iranianvc.com/tetabawigigabowifilavuger9waix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/99051548134.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/american_airlines_cargo_claims_form.pdfIn PDF document text
    • http://zuwarikufaz.epizy.com/football_manager_2019_patch_19._3._6.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/startup_business_plan_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/tazed.pdfIn PDF document text
    • http://vawekud.epizy.com/5305476810.pdfIn 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_off0000d7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C5 5804 bytes
SHA-256: 19a068a4077c171b4c477b461fa3f4805bf3e876a312d6394630836c5551b996
font_01_sfnt_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 10296 bytes
SHA-256: 8b54ab2e0592588f9273e7cf804c7432732e54c17a2b5cb72ffa0f72682f1825

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