PDF malware analysis — malicious · eac2b9f54d8d7fc4

MALICIOUS

PDF

74.0 KB Created: 2021-02-15 17:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fd9c5400e5166f0f57a14dcb0057244f SHA-1: 24cd9d4c9129c4b4af15d1e9fb67527faa8be658 SHA-256: eac2b9f54d8d7fc43559341c6682ad9f0b7895e01d4dad44664341e0724ec1cf

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which is directly linked to a suspicious domain ('bologen.ru') and appears to be part of a phishing lure related to a 'scaling worksheet'. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the PDF is designed to redirect users to malicious sites for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=scaling+worksheet+pdf
- http://organicnu.info/836728823673ujaw.pdf
- https://cdn.sqhk.co/dedenijikal/eTjdjc1/rarovoselirida.pdf
- http://juilopkiretlo.ru/59095984959o1c8t.pdf
- http://xruhdfo.site/8510723488308jmj.pdf
- https://cdn.sqhk.co/dewozoju/DjahexG/middle_finger_emoji_in_text_form.pdf
- https://cdn.sqhk.co/patagarinixa/jdf6Zhh/duwabejasowizaveb.pdf
- https://cdn.sqhk.co/jogekiluse/DY7jdeT/41765770992.pdf
- https://cdn.sqhk.co/gadewekunel/4ibhbhh/bexuraviwexigesaguvumo.pdf
- https://cdn.sqhk.co/widafopaj/dZic59o/kick_the_buddy_forever_game_download_mod_apk.pdf
- http://pozesex.iblogger.org/44522436588.pdf
- https://cdn.sqhk.co/bitaxukezor/dViiOjf/nazugudupulatezobapuxov.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lijopavexanuse/badoo_apk_android_4._0._4.pdf
- http://mixonanax.epizy.com/anaphylaxis_shock.pdf
- http://kikasipab.epizy.com/20915323360.pdf
- http://zepedijuva.epizy.com/80395610031.pdf
- http://zerujafulo.rf.gd/ensiform_cartilage_picture.pdf
- https://s3.amazonaws.com/lewuli/bsg_guidelines_polyp_cancer.pdf
- http://tawuzosidekelos.epizy.com/vidmate_app_for_ios_free.pdf
- https://s3.amazonaws.com/bupesejirijejus/star_wars_figures_value_guide.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e4dc.bin` `0d92052de06843821ccc304a2eb375fb1059510b32f0d76212bc4b1d761755b0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4DC	5676 bytes
`font_01_sfnt_off0000f83e.bin` `5e5863ef49cb63e8adfe5ce895ea5263ac5ca4559ed87a8c08a934563343413a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF83E	10284 bytes

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