PDF malware analysis — malicious · 2dd799cbb21b6c3a

MALICIOUS

PDF

61.4 KB Created: 2020-12-18 16:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 581a16804d5388561bda10e9818c4eda SHA-1: 65875a1f00fbef9f2e97acd3d501795cc8e9529b SHA-256: 2dd799cbb21b6c3ab36c3885e7ef7cc6646cb93d062606cc93b71fd74730233d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to song lyrics, a common tactic for social engineering.

Machine Learning

Nyx PDF Classifier malicious score 0.9984

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://trafffi.ru/123?utm_term=just+before+the+battle+mother+lyrics PDF link annotation
- https://cdn-cms.f-static.net/uploads/4450154/normal_5fd657a630d22.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/8540dbc9-bdb9-462a-8aa2-3a704c412287/28730733657.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18d12876-59e2-415e-8781-0e20f9d0f7a2/aditya_mittal_fide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9cba08fa-50d6-4cd1-959a-5c70ce8ce79d/dear_john_lyrics.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05fbbefd-6eff-467d-9d91-8742d50c1279/roblox_hack_apk_download_unlimited_robux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a95a7bc4-2af3-480e-bcd9-32fa552438dd/zakefowokabur.pdfIn PDF document text
- https://s3.amazonaws.com/somisilegex/free_spanish_body_parts_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/923a2054-3458-4845-b74b-047119949457/87318069537.pdfIn PDF document text
- https://s3.amazonaws.com/bupijila/51072342858.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_off0000b3b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB3B0	5352 bytes
SHA-256: `d2569d7f1aec1d5b039d2ec07938d4f941fe167d6a3c6f0ca55a1b709209b586`
`font_01_sfnt_off0000c5c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5C3	10248 bytes
SHA-256: `18ab4dbcbf281c23af9469f74bd6b441dafca7c30f8f688223d3c87acf8462d5`

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