Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b653f60d558a5a…

MALICIOUS

PDF

90.5 KB Created: 2021-03-31 15:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2756a6168b39269ac7caa5d2f8a4dca6 SHA-1: 2119608857f53f877104ff2d1a9840e1e560e32c SHA-256: 25b653f60d558a5a1f2d562dabd0769c47a6bf8506919a9e21764878e108e414
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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=medieval+village+art
    • https://jadilibetaz.weebly.com/uploads/1/3/4/8/134871175/dipisagegug-xonilaburewex.pdf
    • https://cdn-cms.f-static.net/uploads/4446152/normal_604b0d4b6065e.pdf
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/vuzegivam.pdf
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5fdf058569127.pdf
    • http://copyrightshelpscenters.com/world_of_darkness_book_of_the_deadia6xv.pdf
    • https://cdn-cms.f-static.net/uploads/4446382/normal_604b02a695d76.pdf
    • http://megantv.site/how_to_use_photoshop_cs6_in_hindiig9o0.pdf
    • https://sivikowililip.weebly.com/uploads/1/3/4/5/134599649/923108.pdf
    • https://cdn-cms.f-static.net/uploads/4388612/normal_605d9c910a2e2.pdf
    • https://cdn-cms.f-static.net/uploads/4409819/normal_60140666e05a9.pdf
    • https://static.s123-cdn-static.com/uploads/4480878/normal_5fe0f3ee1fee1.pdf
    • https://static.s123-cdn-static.com/uploads/4492555/normal_5fe5569043f5b.pdf
    • http://nefuzixitelu.iblogger.org/ipad_pro_11_screen_replacement_guide.pdf
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/25e6dd775d646.pdf
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5fd0f289d42b8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sekusasumoda.rf.gd/templates_and_inheritance_in_c_ppt.pdf
    • http://susesibukof.epizy.com/worksheets_on_synthetic_fibers_and_plastics.pdf
    • http://buxozininexe.epizy.com/introduction_to_addictive_behaviors_4th_edition.pdf
    • http://junimufik.epizy.com/pci_b._pharmacy_syllabus.pdf
    • http://zamutuxagen.epizy.com/the_fountainhead_summary_by_chapter.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000127ad.bin
209a798f0e90ce6e5fc829cf6ceb304f68ab78b63b7e8f0792126f3212de4498
pdf-font-stream PDF embedded font (sfnt) at offset 0x127AD 4880 bytes
font_01_sfnt_off00013868.bin
4e819b37b51fd26a948c758fcaebd959dada1688b3db6bcc0d5e6ac84ee7bde5
pdf-font-stream PDF embedded font (sfnt) at offset 0x13868 10820 bytes