PDF malware analysis — malicious · f043ed0ce5808311

MALICIOUS

PDF

76.4 KB Created: 2021-02-15 03:19:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 56a71822f7295b80532b48c9e6b2edb9 SHA-1: d4d0f304a78536b1e485882667363164e2cbd09d SHA-256: f043ed0ce5808311d4d9eb1f0bed541019459a13606b229d38c829b6f0646e33

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 or trojan. It contains an embedded URL that directs to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of an external URI points to a phishing attempt.

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://maypoin.ru/wix?keyword=question+answer+sms+for+friends
- https://cdn.sqhk.co/wadelovelo/hjggdij/hydraulic_calculations_example.pdf
- https://mazazogadof.weebly.com/uploads/1/3/4/3/134374066/tuxatepodutag-gukirimafo.pdf
- https://cdn.sqhk.co/fipimomozuk/cjdp7Lg/88247220838.pdf
- https://xixusumer.weebly.com/uploads/1/3/0/8/130814933/e5a9e2.pdf
- http://1eyvgo.xyz/tosixiq7crg.pdf
- https://cdn.sqhk.co/golemejexeno/emxNPfE/management_information_systems_degree_ucf.pdf
- https://cdn.sqhk.co/bemoranoz/jaoQjb9/dead_rain_new_zombie_virus_revdl.pdf
- https://cdn.sqhk.co/gimexigerub/ca9hcjf/34843687897.pdf
- https://cdn.sqhk.co/pifonode/ZEhgiiN/nujadobozofugogol.pdf
- https://cdn.sqhk.co/totudavomud/wuvijhb/35031014597.pdf
- https://dizodedijep.weebly.com/uploads/1/3/5/3/135391654/tabufalifu_gimekikuwos.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- http://gikisomu.epizy.com/jasalobunumuzoxamesipupom.pdf
- http://gojejamajutemus.epizy.com/89316210368.pdf
- http://rafopaju.rf.gd/at_t_passport_app.pdf
- http://tidewoxawutose.epizy.com/79492417398.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_off0000e05e.bin` `4ab7f9ffbfc50fe3ea6f1a465612639174dc9467b7fdadcaf7f57b1b49d5cfc4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE05E	5056 bytes
`font_01_sfnt_off0000f182.bin` `5bc219d1409a90bfca24feca7e236eca805902a76273beabbeab36b56587fd0d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF182	10728 bytes
`font_02_sfnt_off00011633.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11633	4324 bytes

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