PDF malware analysis — malicious · b793978c539f9763

MALICIOUS

PDF

89.3 KB Created: 2021-03-17 05:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2e2f228f7fe9e3e079ad7976df83b41a SHA-1: 40ace08582105384bbf777bc57126040ec509a94 SHA-256: b793978c539f97634e182de0c4bed423a83bfb823f1597120cd6279405f41b7e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'https://nipisod.ru/award?keyword=ccna+voice+notes+pdf', which is presented in the document body as a lure for 'ccna voice notes pdf'. This suggests the document is part of a phishing campaign or a distribution mechanism for further malware.

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://nipisod.ru/award?keyword=ccna+voice+notes+pdf
- https://cdn-cms.f-static.net/uploads/4420030/normal_6022be828e8a6.pdf
- http://xagowawusik.66ghz.com/82187032167.pdf
- https://static.s123-cdn-static.com/uploads/4475727/normal_5fefc0eeb6430.pdf
- https://cdn-cms.f-static.net/uploads/4487663/normal_604d7f021c5b4.pdf
- http://kadaxejob.mypressonline.com/llamadas_telefnicas_roberto_bolao_completo.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://sofidubanelen.epizy.com/aamir_khan_dangal_movie.pdf
- https://s3.amazonaws.com/xuzed/cancer_information_booklets.pdf
- http://jewomegoka.epizy.com/7th_grade_math_vocabulary.pdf
- http://nopugorib.onlinewebshop.net/7599519591.pdf
- http://fopagozijudiri.epizy.com/maplestory_2_mobile.pdf
- http://liwubujuwu.epizy.com/aviation_safety_newsletter_template.pdf
- https://uploads.strikinglycdn.com/files/877c1e48-892c-4f34-948a-3c4d9f5bc239/ford_4_speed_automatic_transmission_identification.pdf
- http://kugesiv.epizy.com/washington_state_university_address_for_taxes.pdf
- http://vepunip.rf.gd/latihan_bahasa_arab_tahun_1.pdf
- http://bopisumeku.atwebpages.com/rulasemoredub.pdf
- https://uploads.strikinglycdn.com/files/24a73133-a2a9-45e5-87ef-a1a450efd01b/why_does_my_dyson_dc34_keeps_cutting_out.pdf
- https://s3.amazonaws.com/xijuxosisomuna/3d_games_java_320x240.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_off00011d8c.bin` `9e9578f92a5891c15442b94965eb07d4e20682b273bec90fb7dd2b07914eba58`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D8C	4988 bytes
`font_01_sfnt_off00012ea2.bin` `cf415a063df04645f5578c1f93f30bc72d60f6bd96215229e3c480acc438892d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12EA2	12468 bytes

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