Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99c5c43e39e0af2…

MALICIOUS

PDF

209.8 KB Created: 2020-11-20 02:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56c5a70a46d48fbabb590c39dfed5608 SHA-1: b9f3a85f20349f81c318e96a530a889c9b2faf63 SHA-256: c99c5c43e39e0af256fd821f82f5e1bae81892c886401809d69d50e928c1ac5f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, references 'Wheeler Dealers episodes', suggesting a lure to attract user interest.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://traffnew.ru/aws?utm_term=wheeler+dealers+episodes
    • https://nejalebemenogun.weebly.com/uploads/1/3/1/0/131070187/sefan.pdf
    • https://cdn-cms.f-static.net/uploads/4418192/normal_5faa41e91e1db.pdf
    • https://cdn-cms.f-static.net/uploads/4414866/normal_5fb2c0a5287d5.pdf
    • https://cdn-cms.f-static.net/uploads/4368956/normal_5fb580b1c2aef.pdf
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f92c3b055c41.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/d5cb2d48a.pdf
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/a93c53d.pdf
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/35a0f87a460ff5.pdf
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5fa51d6c90ffc.pdf
    • https://mawajajapok.weebly.com/uploads/1/3/4/3/134353668/1a3e3e0d8257b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rudelazifizuvo/51700997389.pdf
    • https://s3.amazonaws.com/xojafemori/68409143834.pdf
    • https://s3.amazonaws.com/jasadavebaga/wow_classic_priest_bis_phase_6.pdf
    • https://s3.amazonaws.com/degisapemifa/an_astrologer_s_day_story_in_english.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/toketav.pdf
    • https://s3.amazonaws.com/mijedusovineti/international_journal_of_biotechnology_and_food_science.pdf
    • https://s3.amazonaws.com/sugosubexez/dog_adoption_certificate_sample.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f177.bin
745b389429b74dc8cc10a22542ce31814246ddf654ad8bf2591dfbf97a5edf9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F177 4660 bytes
font_01_sfnt_off0003015d.bin
6a3272095ef257cd3452c8c081ea2f5d4bfd3a6fa5c23181f94a4c8ef7332a89
pdf-font-stream PDF embedded font (sfnt) at offset 0x3015D 13332 bytes
font_02_sfnt_off00032b15.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x32B15 4324 bytes