Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ade465b88902e87…

MALICIOUS

PDF

86.5 KB Created: 2021-06-02 02:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdc4fc209c0d6cfd3e89b0149c0a2400 SHA-1: 71ecd2c43c54b66d5e8d7afa76a55db45ec3ced7 SHA-256: 3ade465b88902e87bedf10734497514952328dec01dc2c3886a9dffd016dc306
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to downloading games, and an embedded URI points to a URL that also appears to be related to game downloads. This suggests a phishing or malware distribution lure.

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://pixomot.ru/pbw?utm_term=ps3+oyunlar%25C4%25B1+full+tek+link+indir
    • https://cdn-cms.f-static.net/uploads/4367912/normal_600a849f5fb43.pdf
    • https://cdn-cms.f-static.net/uploads/4407306/normal_600f3ce8ecc25.pdf
    • https://cdn-cms.f-static.net/uploads/4405186/normal_6058744bcd84d.pdf
    • https://static.s123-cdn-static-d.com/uploads/4491925/normal_60b4cd70e6efc.pdf
    • https://cdn-cms.f-static.net/uploads/4369331/normal_602a23c679f00.pdf
    • https://cdn-cms.f-static.net/uploads/4460963/normal_6041777f821b0.pdf
    • https://cdn-cms.f-static.net/uploads/4457861/normal_605d866a1dfbd.pdf
    • https://cdn-cms.f-static.net/uploads/4490516/normal_6036f74a98d26.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gifavipa.pbworks.com/w/file/fetch/144417525/free_movies_plus_app_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/fa5b7118-d30a-434d-9938-8b63bb9e8486/49688655941.pdf
    • https://uploads.strikinglycdn.com/files/66bee7f6-ce4d-4f25-87c0-795968dc3570/24669555932.pdf
    • https://uploads.strikinglycdn.com/files/23c0687c-81c5-4f2c-a97c-738f14db552a/kanofukupininosijejupi.pdf
    • https://uploads.strikinglycdn.com/files/47c1c497-e37a-40d2-b70a-f523aa2a2b92/12516216297.pdf
    • https://uploads.strikinglycdn.com/files/cc1f2a3c-1177-429a-9253-bc9dce0b5e9b/38891047123.pdf
    • http://siwuromo.pbworks.com/f/98504289194.pdf
    • http://banusiv.pbworks.com/w/file/fetch/144480966/fbulas_cortas_en_italiano.pdf
    • http://mogulazedub.pbworks.com/f/exercices_figures_de_style_lyce_seconde.pdf
    • https://uploads.strikinglycdn.com/files/d906d6b5-aada-415c-b7cb-4a84fdaa0fc2/myers_briggs_personality_compatibility_chart.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_off00011487.bin
e5ed5586ac737f01548064a4e294c794b92f18c20a1da5132ad9899f72f15675
pdf-font-stream PDF embedded font (sfnt) at offset 0x11487 5264 bytes
font_01_sfnt_off00012687.bin
f9e250e16cb5f2bd4fd9de0db4ac707dd43af92b6164fc747de41e1e661d0ca4
pdf-font-stream PDF embedded font (sfnt) at offset 0x12687 11808 bytes