Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ff5e01d352478b5…

MALICIOUS

PDF

68.8 KB Created: 2021-03-05 17:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e018aa41e688c230b17d1aea05125e0c SHA-1: 187ba87fd5f0997d75aad7a585df47399528ba8c SHA-256: 6ff5e01d352478b5a0c0658f120f7e8df944f3546517c461551bbcaf6284bfbe
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that appears to be part of a phishing or redirection scheme, disguised as educational content. The presence of PDF-specific heuristics and embedded URLs suggests an attempt to exploit PDF viewers or trick users into navigating to malicious sites.

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://soxebez.ru/aws?utm_term=physics+7th+edition+giancoli+questions+solutions
    • https://gowobokibisalo.weebly.com/uploads/1/3/0/9/130969305/4cfe6a2e.pdf
    • http://xufubub.iblogger.org/bluecoat_school_nottingham_uniform.pdf
    • http://tijudiwulewanuw.getenjoyment.net/gutufujaburiledax.pdf
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/b95484899a.pdf
    • http://tewatag.medianewsonline.com/mavirawozirovovifij.pdf
    • https://cdn-cms.f-static.net/uploads/4374704/normal_60150d6b7fbf4.pdf
    • http://gosunenibunale.getenjoyment.net/37885652816.pdf
    • https://gopiwalugase.weebly.com/uploads/1/3/0/7/130738825/kavow_kakujur_kojaw_somuto.pdf
    • https://cdn-cms.f-static.net/uploads/4403820/normal_6023b9a0650e6.pdf
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5fca92285cf90.pdf
    • https://cdn-cms.f-static.net/uploads/4490128/normal_600b6281580ce.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ratofozobafizok.epizy.com/what_is_molecular_weight_definition.pdf
    • https://uploads.strikinglycdn.com/files/0f0d1ee2-2cf9-462a-9f4d-cf06c5327435/fepadexirusixilowa.pdf
    • https://uploads.strikinglycdn.com/files/74605a38-7397-4b43-b859-94b73d585377/10567947761.pdf
    • https://uploads.strikinglycdn.com/files/da575093-a075-4df8-9447-644f5031f3f2/twitter_sports_illustrated_swimsuit.pdf
    • http://wiwekire.epizy.com/bienestar_animal_ovino-_caprino.pdf
    • http://selofedibaxonal.epizy.com/how_to_open_asus_memo_pad_7.pdf
    • https://uploads.strikinglycdn.com/files/a831696b-a680-4fec-bf7c-816d006ebeb0/43703319171.pdf
    • http://nupopagiwagivu.epizy.com/diwezelup.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_off0000ce3f.bin
116de40754de414e65a183ef99eac30b26efd1b53f9e8f841e665079d4a04c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3F 5416 bytes
font_01_sfnt_off0000e0b1.bin
ba1ae43449342d6941ea4b781f97a4eb241099070bb5fa5653af4ae109336670
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B1 11596 bytes