Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec9c7df19695a67…

MALICIOUS

PDF

76.3 KB Created: 2021-04-04 19:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c46f5fd317f0710636488f2c10b3c830 SHA-1: 7d25c223aed5c371a98d9da293e811dba5699c13 SHA-256: 3ec9c7df19695a679952d858790659868b3cef947382bad72e1cf9c3618e473b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to 'https://xezojetit.ru/strik?utm_term=logo+maker+app+ios', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains references to 'Logo maker app ios' and 'wkhtmltopdf', suggesting a deceptive pretext for the malicious link.

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://xezojetit.ru/strik?utm_term=logo+maker+app+ios
    • https://cdn-cms.f-static.net/uploads/4487381/normal_6019719b6c0fe.pdf
    • https://cdn.sqhk.co/gosukutusu/0ojeHYV/disney_movies_newer.pdf
    • https://cdn-cms.f-static.net/uploads/4489598/normal_603659722dbf6.pdf
    • https://cdn-cms.f-static.net/uploads/4455178/normal_605bad3e9a771.pdf
    • https://static.s123-cdn-static.com/uploads/4416939/normal_5fffc2610483f.pdf
    • http://xubanapirobula.mypressonline.com/10286860723.pdf
    • https://static.s123-cdn-static.com/uploads/4446789/normal_5ff990b6127ef.pdf
    • https://static.s123-cdn-static.com/uploads/4450418/normal_6006ae0594f1d.pdf
    • https://static.s123-cdn-static.com/uploads/4415770/normal_5ffc27731faf5.pdf
    • https://static.s123-cdn-static.com/uploads/4425723/normal_6005996f8284a.pdf
    • https://cdn.sqhk.co/tititafoza/p9VZvig/7784155786.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d46aadce-da2e-4921-be1e-34ed4191e013/rupapa.pdf
    • https://uploads.strikinglycdn.com/files/f8aff6e8-ebce-42ac-94c1-97d3dee6ed79/33314880032.pdf
    • http://forojiwimudobo.atwebpages.com/tugulewizejuxadutotog.pdf
    • https://uploads.strikinglycdn.com/files/5cffa39f-eb83-4ce0-8a73-2796eb88210f/59767781432.pdf
    • https://uploads.strikinglycdn.com/files/74cc4e39-6232-4e8c-952b-f0b307656356/60583904119.pdf
    • http://razebegapusej.rf.gd/piragelezanakapo.pdf
    • http://tusepubenawipad.rf.gd/jojo_golden_wind_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/af54c8af-5e9e-4092-92b2-a3b8be1170f9/97728884485.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_off0000eee7.bin
d3fcca90739fa8e202aff5b6efdb28cb7f86a59d072936cccd821893937d0837
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 5112 bytes
font_01_sfnt_off0001003b.bin
a75716baf414ae27eb620cdb8b488435e578286ad27fd1497f2799bc26aab2cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x1003B 10512 bytes