Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac60ad7e1214f4cc…

MALICIOUS

PDF

73.4 KB Created: 2021-01-14 11:29:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3a384e1747ba56d29d21eef98861850b SHA-1: a5b0ef7f00d0087c1c5b263470bb46cec5f25dc8 SHA-256: ac60ad7e1214f4cc3a8cd3f85119b667703c74c453f9a3ed550f5fcb9d489b6d
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. It contains an embedded URI pointing to 'https://traffset.ru/aws?utm_term=wrong+turn+4+movie++dual+audio', which is likely a phishing lure. The document body, though heavily obfuscated, suggests a theme related to movie downloads, further supporting the phishing pretext. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://traffset.ru/aws?utm_term=wrong+turn+4+movie++dual+audio PDF link annotation
    • https://cdn.sqhk.co/togareguko/gfjaXix/shot_clock_cheese_significado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495681/normal_5fd200fa2fbaa.pdfIn PDF document text
    • https://site-1200721.mozfiles.com/files/1200721/freedom_apk_android_4__4__4.pdfIn PDF document text
    • https://site-1083588.mozfiles.com/files/1083588/tamin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5fc83e7f05711.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/jaWbhit/7831598096.pdfIn PDF document text
    • https://site-1191779.mozfiles.com/files/1191779/75875832027.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415537/normal_5fc9903a8585a.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/gavexilatuvitaz/92134459752.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_off0000d581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD581 5008 bytes
SHA-256: d332f578f9a1956ffdab8684c5d2b6addaa1ee51f7184f249eb6f889434ab46c
font_01_sfnt_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 10692 bytes
SHA-256: 345f590a5dbcb57f926fdd5b585381363aa1d297892b262a27c36671768fe4a0
font_02_sfnt_off00010b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B26 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378