Malicious PDF — malware analysis report

Static analysis result for SHA-256 1978943029df3037…

MALICIOUS

PDF

68.2 KB Created: 2021-06-11 18:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 924572141f136260972856871db9b188 SHA-1: d85889558b858fca040966292a3b40c85e274e67 SHA-256: 1978943029df3037e932d5a10cea95af11d1c66fdc05684d7771eed5fdb70f70
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 phishing attempt. It contains an embedded URI pointing to 'https://golowaki.ru/123?utm_term=automated+software+testing+with+python', likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/123?utm_term=automated+software+testing+with+python
    • https://pegotovu.weebly.com/uploads/1/3/4/8/134855979/3b8d7.pdf
    • https://cdn-cms.f-static.net/uploads/4372682/normal_603d285b39a19.pdf
    • https://cdn-cms.f-static.net/uploads/4447087/normal_6027d7d799100.pdf
    • https://static.s123-cdn-static.com/uploads/4377371/normal_5ff0eb35d9b29.pdf
    • https://cdn-cms.f-static.net/uploads/4368475/normal_60baa417a3e31.pdf
    • https://dirujewe.weebly.com/uploads/1/3/4/6/134677456/7c5b1101df.pdf
    • https://cdn-cms.f-static.net/uploads/4448126/normal_604699cc3cbec.pdf
    • https://cdn-cms.f-static.net/uploads/4451757/normal_601e1e32bd740.pdf
    • https://gujavaluzosozu.weebly.com/uploads/1/3/4/0/134013303/gaboxazibut-tazidefowubowe.pdf
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5fe6b65b7f862.pdf
    • https://garepogive.weebly.com/uploads/1/3/4/8/134871831/1734099.pdf
    • https://cdn-cms.f-static.net/uploads/4487623/normal_606d97e592ecc.pdf
    • https://static.s123-cdn-static.com/uploads/4473064/normal_5fc8a562dd5b4.pdf
    • https://lexodedibipi.weebly.com/uploads/1/3/4/6/134683920/4306198.pdf
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5fed65b2a1027.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://visetululiv.pbworks.com/w/file/fetch/144421554/37887566855.pdf
    • https://uploads.strikinglycdn.com/files/3ff58192-c1b4-4a0f-9b35-f7e6956db577/how_to_reset_a_rinnai_hot_water_heater.pdf
    • https://uploads.strikinglycdn.com/files/4f312209-1801-4bad-ab75-0f865cede4e5/dadukojotazukeroseniw.pdf
    • https://uploads.strikinglycdn.com/files/f1d797cb-6c76-414d-aaca-b8b1ba7adba1/penguin_readers_starter_level_the_hound_of_the_baskervilles.pdf
    • http://vipafuwusawe.pbworks.com/w/file/fetch/145112958/43915070944.pdf
    • http://vejivab.pbworks.com/f/nubafejiwonaxanonag.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_off0000cd45.bin
d4d167d159b56c7ba7bfaaf70f42f2bcd9e044c9858ddbac44a5ba8988905cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD45 5604 bytes
font_01_sfnt_off0000e044.bin
f0b31a280496ef70112f1182fd5d1a30ede5e17d4956557abcc86a5a2e572a49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 10324 bytes

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