PDF malware analysis — malicious · 82a66d87b89a99ca

MALICIOUS

PDF

84.5 KB Created: 2021-03-22 21:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 40c36c612ace5ef43afab05bd6b568d6 SHA-1: 73dfa531789e6816834fb12308fc693b50599365 SHA-256: 82a66d87b89a99ca9e4503e0ecc1320ddde0fa5316040f032ee544dfdf06f333

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are dynamically generated and point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9458

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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://midufefew.ru/award?keyword=bangla+islamic+boi+pdf
- https://wokugosag.weebly.com/uploads/1/3/4/3/134339956/5410093.pdf
- https://tipipiteker.weebly.com/uploads/1/3/0/7/130775441/05a30b7.pdf
- https://vekewofamir.weebly.com/uploads/1/3/4/1/134131384/zibonimarixa_nalimebefemil_worodolubobone_tefaruzajifeb.pdf
- http://nalivosebek.22web.org/how_do_i_unlock_my_motorola_phone_if_i_forgot_the_password_without_losing_it.pdf
- https://dipabuxirakilat.weebly.com/uploads/1/3/1/0/131071076/0bc731e28316a6.pdf
- https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/a15c78217559.pdf
- https://jedexapotup.weebly.com/uploads/1/3/4/4/134472831/959f2.pdf
- http://fabikaj.iblogger.org/79244693152.pdf
- https://gafeziluwer.weebly.com/uploads/1/3/4/3/134310472/354643a4.pdf
- https://pefisidedufe.weebly.com/uploads/1/3/4/9/134902532/4421503.pdf
- https://munibejexa.weebly.com/uploads/1/3/1/4/131414516/82cb4b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://vokorugagamozi.rf.gd/six_of_crows_characters_wiki.pdf
- https://s3.amazonaws.com/jupudizadid/girlfriends_guide_to_divorce_season_4_clothing.pdf
- https://uploads.strikinglycdn.com/files/12f72a41-7d78-4281-ac5c-96a704efd035/cuisinart_ss-700_charcoal_filters.pdf
- https://uploads.strikinglycdn.com/files/d1f934cf-a501-44ce-a93f-99689f826423/sound_blaster_z_not_working.pdf
- https://s3.amazonaws.com/vezumobigodub/62427456525.pdf
- https://s3.amazonaws.com/vuzotisenixava/bubble_shooter_witch_saga_2_mod_apk.pdf
- https://uploads.strikinglycdn.com/files/f2169844-631a-4fa8-b3d4-71045f9d4ef4/79697939145.pdf
- https://uploads.strikinglycdn.com/files/775dbfdd-3146-42cd-aedd-8b2d856fdb23/81835319098.pdf
- http://sebilazog.rf.gd/semedufi.pdf
- https://s3.amazonaws.com/vidadaviwal/29311712890.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000123d1.bin` `4c3d5a9f3700bc7dedbab3c68976525ef7d3c8b1e5a3426e8b38f2592d8e3292`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123D1	5568 bytes

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