PDF malware analysis — malicious · a074df3a18322ec7

MALICIOUS

PDF

74.0 KB Created: 2020-11-26 07:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7bf84396371fae013d50f685227fcdc3 SHA-1: 18e183b239bd9254b17d724b8c83440dba8ef153 SHA-256: a074df3a18322ec7e8349a8dbf38bfbaaed5eeeaead841cce601f73ad1052b6f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'sex-linked traits', suggesting a lure to entice users to click the malicious link.

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://trafftec.ru/strik?utm_term=sex-linked+traits+definition+and+examples
- https://cdn-cms.f-static.net/uploads/4373243/normal_5f8c7ef64594d.pdf
- https://cdn-cms.f-static.net/uploads/4365536/normal_5fbcc5cc211b4.pdf
- https://cdn-cms.f-static.net/uploads/4365639/normal_5f9015b9022ca.pdf
- https://cdn-cms.f-static.net/uploads/4480170/normal_5fba3c380fcb0.pdf
- https://cdn-cms.f-static.net/uploads/4416921/normal_5fa3d62959533.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/nuxulikiwab/text_structure_games_4th_grade.pdf
- https://s3.amazonaws.com/jajoxulabojaso/bangungot_meaning_in_english.pdf
- https://uploads.strikinglycdn.com/files/7090b7f9-ea7a-4177-a757-cd8cb7444745/world_culture_6th_grade_lesson_plans_texas.pdf
- https://s3.amazonaws.com/falufusu/cycle_race_java_game.pdf
- https://s3.amazonaws.com/susopuzupure/endoproteza_stawu_kolanowego_rehabilitacja.pdf
- https://uploads.strikinglycdn.com/files/ecc8e3de-fc20-4b33-9564-d6ff65f7af05/nutri_ninja_pro_bl450.pdf
- https://s3.amazonaws.com/wepeliniru/51362208569.pdf
- https://s3.amazonaws.com/pamavon/a_widow_s_guide_to_healing_book.pdf
- https://uploads.strikinglycdn.com/files/5747d164-ac26-4b7f-95ce-bac4ec3a2476/fefarolapufel.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d63d.bin` `8b325aedc551fc4834fd16998b1ca090f1381b27ab8ed60c7ea4dbbc13371e66`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD63D	5240 bytes
`font_01_sfnt_off0000e7f6.bin` `551ab0407bb7bfa79dcbb0ba96f4c8f09c49c375e16688dedbf209ac7a26235c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7F6	10728 bytes
`font_02_sfnt_off00010ca3.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CA3	4324 bytes

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