PDF malware analysis — malicious · 2ba69958aa48324d

MALICIOUS

PDF

73.7 KB Created: 2020-11-26 03:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 3db2f04d985ab0d262649c2c788a389a SHA-1: 1c283c97760c7d26ff4d0f97b928f3afd417106f SHA-256: 2ba69958aa48324deda743ff8c69fb14be0f14c01ea96ce0b921ee2de0cf8924

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a critical heuristic firing for ClamAV detection. An external URI heuristic points to a suspicious URL, trafftec.ru, which is likely used to host malicious content or phishing pages. The document body, though heavily obfuscated, contains text related to a 'free pdf' download, reinforcing the phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafftec.ru/123?utm_term=drinking+a+love+story+free+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4483587/normal_5fbc2e7229a14.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454054/normal_5fa9a7d583bc2.pdfIn PDF document text
- https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/2702624.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494146/normal_5fb6be3ee8ce6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495997/normal_5fae10d527bc1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368478/normal_5f8da3e58cf5e.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/88f28fbe-849c-4c90-9ca8-d03c4f85ab0b/meaning_of_epi_medical_terminology.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5c4b07c-e336-414d-8bae-93c4dc7c1833/49121052876.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bb78689b-b942-4ae7-b457-3ed4245844e0/7.4_homeostasis_and_cells_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/sezebepit/noniriratisanapizosurubed.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_off0000e1fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1FA	5432 bytes
SHA-256: `94385df2338d815e1bd3de5d0e511819a786dba91209febe323285431cc43e62`
`font_01_sfnt_off0000f4a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4A2	10984 bytes
SHA-256: `1b3f9a63b8498178b1a5fac119148c31fc10bac2874ac6dc174a8c233bd8e518`

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