PDF malware analysis — malicious · cd5af5a0e91e83f7

MALICIOUS

PDF

74.4 KB Created: 2021-03-11 07:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 916e3e8fe18312c59dca1b2729e610d7 SHA-1: 7f88d9e247b68c89bb380a4142ac982c9511b747 SHA-256: cd5af5a0e91e83f70fdf5488c1873de413111242c7779a6f7ac6adc4c26c5b4e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'resalured.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to academic marksheet information, aligning with common social engineering tactics.

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://resalured.ru/123?utm_term=sol+marksheet+2019+ba+programme
- http://wimazosuwoxugij.66ghz.com/45607066344.pdf
- https://cdn.sqhk.co/tisumusef/cfACpja/planet_earth_documentary_2020.pdf
- https://wesarifalonaba.weebly.com/uploads/1/3/5/9/135961423/3604237.pdf
- https://zijobukevas.weebly.com/uploads/1/3/1/4/131454580/62f44c.pdf
- http://kerorakesona.22web.org/the_little_match_girl_disney_music.pdf
- https://lajexupizad.weebly.com/uploads/1/3/0/7/130775806/vurajefugifoj.pdf
- https://kijujiwovijuk.weebly.com/uploads/1/3/1/4/131453096/6770417debc.pdf
- https://cdn.sqhk.co/pozuwifofub/gijbyCy/slot_car_trucks_for_sale.pdf
- https://cdn.sqhk.co/buzulexoxuve/VhilMge/39296580998.pdf
- https://tunawirivam.weebly.com/uploads/1/3/1/4/131437064/vasixotaxav.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/wovisak/35749609711.pdf
- http://sigivopowofode.epizy.com/voguleguwibavaxo.pdf
- http://xotewewo.rf.gd/29808427747.pdf
- https://s3.amazonaws.com/jagux/cctv_cable_types.pdf
- http://rajiwewovipu.epizy.com/xanepugebatajav.pdf
- https://s3.amazonaws.com/fekife/dasevalatonosijozawogo.pdf
- http://pasazaxara.rf.gd/sabogejefifikil.pdf
- http://ralodanuf.rf.gd/73816975024.pdf
- https://s3.amazonaws.com/tanapilamaxi/pogopolonajixosizamiza.pdf
- https://s3.amazonaws.com/gewuwasi/android_adb_how_to_install_apk.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_off0000e2a1.bin` `794faf4e9a74994832a18174e6ab5b4fe29fcb81d23ad402ca20797f151c90d1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2A1	6024 bytes
`font_01_sfnt_off0000f6e5.bin` `2ee0adc9b6c4e957799328c370b5c76b363221ffa958b0fcac7cfd25336e69b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6E5	11000 bytes

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