PDF malware analysis — malicious · a75cbef6a6f73954

MALICIOUS

PDF

68.6 KB Created: 2021-01-09 18:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: d10ea41aa415e518b4f4c0160c8f3b12 SHA-1: 95c5b26cc8427e68b233b647114888f5e6305169 SHA-256: a75cbef6a6f73954ab7e49a3318eb4ef3f443e3ce8de3e698e58830028c05e68

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Edudel date sheet 2019 class 8'.

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://trafffi.ru/aws?utm_term=edudel+date+sheet+2019+class+8 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4374968/normal_5fb5181746a37.pdfIn PDF document text
- https://cdn.sqhk.co/kagelemovo/NhjgUKC/space_battle_wallpaper_4k.pdfIn PDF document text
- https://cdn.sqhk.co/jarebomu/mhhgc0F/83628444148.pdfIn PDF document text
- https://cdn.sqhk.co/jowapezo/I9DNicV/super_mario_run_how_to_change_characters.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471512/normal_5faffa90a5a64.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476294/normal_5fa9398da296b.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/fidefofudi/java_se_windows_7_32_bit.pdfIn PDF document text
- https://s3.amazonaws.com/goviwigax/blair_witch_2.pdfIn PDF document text
- https://s3.amazonaws.com/xokebore/best_manual_orange_juice_press.pdfIn PDF document text
- https://s3.amazonaws.com/sosupejuxofedo/android_os_versions_market_share_2018.pdfIn PDF document text
- https://s3.amazonaws.com/bejikefowu/15258622337.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_off0000ce4a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE4A	5564 bytes
SHA-256: `49e441ec38b6c1c9c5fe9fb8b9525c5b7540c672d884e836dca15756a65162ec`
`font_01_sfnt_off0000e133.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE133	10968 bytes
SHA-256: `41dc475b41eedde8cc69d2aab5d2d6939a396ff19d11b253722ce54506b5d37c`

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