PDF malware analysis — malicious · d6edda665bd597bb

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 10:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 94a6ecefd2ff08204ce384debc31763f SHA-1: 120586678dc5a524d709be6e0ebaeb7c43dd8bfe SHA-256: d6edda665bd597bb0bbb6538c1e45e0314981a0724a3d7cbe1298758be95f9d5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document was flagged by ClamAV as a phishing trojan and ML classifiers indicated a high probability of maliciousness. It contains a large number of external links, suggesting it functions as a link farm to distribute malicious content or phish for credentials. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

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
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://golowaki.ru/123?utm_term=the+giver+audiobook+chapter+4-6
- https://cdn.sqhk.co/jalafimimodo/jhhcgju/galaxy_shooter_strike_force_mod_apk.pdf
- https://cdn.sqhk.co/sutazojawote/pjh5cih/telemedicine_vs_telehealth_cms.pdf
- https://cdn.sqhk.co/ralapogifur/xjahaih/rizifulef.pdf
- https://cdn.sqhk.co/metexemoraga/a4w4Mel/48624886124.pdf
- http://fazejajogavu.medianewsonline.com/babexinapazeximomano.pdf
- https://cdn.sqhk.co/najiligopej/jgAiahc/ice_hockey_all_star_game.pdf
- https://cdn.sqhk.co/rijomawonuj/d7Xo5je/2161555407.pdf
- https://cdn.sqhk.co/vuwipabobatu/rhh4xgj/99252667107.pdf
- https://loxoxonejuk.weebly.com/uploads/1/3/4/6/134684666/xigezizagis.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://kuxemozoxabonag.onlinewebshop.net/breckwell_big_e_auger_motor.pdf
- https://s3.amazonaws.com/zepifudoxapo/homograph_worksheets_for_2nd_graders.pdf
- https://s3.amazonaws.com/remuv/household_bug_guide.pdf
- https://s3.amazonaws.com/gateme/auditors_report_of_company.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_off0000e0fd.bin` `8bd091e8b37ccfa7ac7464105d3b98a929f65efc44f40c7bede82f6045f1302f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0FD	5612 bytes
`font_01_sfnt_off0000f41e.bin` `2bced8b47715dfda5a42e0b66b3aededf5b22d6df67e33186e738dbbdff37571`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF41E	9544 bytes

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