Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2a2ec8e3324895…

MALICIOUS

PDF

75.5 KB Created: 2021-03-19 06:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 00db1e5e2041b2481d5c90976e7a61b0 SHA-1: 1eb447bc00c944bf007b2a5d57db0a52478989b2 SHA-256: 5e2a2ec8e3324895dca4fdd456e1ec7ba341d2fdc3337ed047b2c016ebfdf82b
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

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://botokaw.ru/wix?keyword=addicted+zane+pdf+francais PDF link annotation
    • http://wijeripe.iblogger.org/urinary_system_anatomy_worksheet.pdfIn PDF document text
    • https://sokikafumuwo.weebly.com/uploads/1/3/4/6/134697409/pafaluxenon_wodepote.pdfIn PDF document text
    • http://begdas.space/use_the_fundamental_theorem_of_calculus_to_find_the_derivative_of_an_integral_functiong23e8.pdfIn PDF document text
    • http://milktree.store/is_it_bad_to_eat_too_many_fruits_in_a_daytatuf.pdfIn PDF document text
    • http://nesobaka7.xyz/56093469986tgjwa.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewakuw/aifgfgj/comparable_sales_report.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/jighfhc/pediwo.pdfIn PDF document text
    • http://citruss.space/awash_bank_examrepdx.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/9149852.pdfIn PDF document text
    • https://gaxezoxo.weebly.com/uploads/1/3/0/7/130776828/1bb23a835b317.pdfIn PDF document text
    • http://nekretnine.site/keduvorzsbe7.pdfIn PDF document text
    • http://everydays.space/black_and_decker_mouse_sander_replacement_partshkhqv.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://s3.amazonaws.com/zupenafud/brunhilda_guide_aov.pdfIn PDF document text
    • http://poxipepeti.epizy.com/foxugumobekobod.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/ancillary_testing_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/transformers_animated_movie_free_streaming.pdfIn PDF document text
    • http://juvegebufu.epizy.com/jeros.pdfIn PDF document text
    • http://zoxizagujaniru.epizy.com/mibajasijevavowopake.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/8265007474.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_off0000db20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB20 4832 bytes
SHA-256: dafa1d56500e84f9441a01ebec765b7e5c8cdcb9be14cd2d0d45678db77580ae
font_01_sfnt_off0000eb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 11072 bytes
SHA-256: 92602f928e7bec6db58c02b098b41d93358dc51afacc133d1ce5bf5cb64afbdc
font_02_sfnt_off00011144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11144 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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