PDF malware analysis — malicious · b7aa0dddeda4e84e

MALICIOUS

PDF

89.7 KB Created: 2021-01-11 18:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07

MD5: f4e9ec7e6c54a2c96e4e26c5f55106b8 SHA-1: 359d43917e3c1396c748be6c63d4414d9d20eca5 SHA-256: b7aa0dddeda4e84ee327a57fa8c9a101cd0e6c44a529f26dfc8ffb9a8728e8f2

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/123?utm_term=boy+scout+candle+ceremony+script'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier and ClamAV also flagged this file as malicious, reinforcing the assessment of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9962

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://traffine.ru/123?utm_term=boy+scout+candle+ceremony+script In PDF document text
- https://static.s123-cdn-static.com/uploads/4421983/normal_5fecae7c85163.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447888/normal_5fc9da3fbd47a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380209/normal_5fb5d33f65174.pdfIn PDF document text
- https://cdn.sqhk.co/gajerivab/62L1ojj/break_it_down_song_lyrics.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455380/normal_5fcdf9d000e45.pdfIn PDF document text
- https://zomerasojukoluw.weebly.com/uploads/1/3/4/7/134769652/d7e042.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/sigobija/13961415606.pdfIn PDF document text
- https://s3.amazonaws.com/lomogas/caverna_dos_sonhos_esquecidos_dublado.pdfIn PDF document text
- https://s3.amazonaws.com/suxiweke/magnetic_rubber_sheet_uk.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00012326.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12326	5368 bytes
SHA-256: `a91642fd0a2cd942895d192179cd93f26676cc91a062d59f1ac27cc4b8c20496`
`font_01_sfnt_off00013560.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13560	10696 bytes
SHA-256: `618431f0e0117ff7d069662ccfec798a020ef42593a09397ad71e7decb0af5c5`

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