PDF malware analysis — malicious · d476c5dd6b483dac

MALICIOUS

PDF

66.8 KB Created: 2020-11-21 15:27:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1a11f7674cac65fdf774e78ead6af06f SHA-1: 12157c99182717c18f35020229d0cc421ce278da SHA-256: d476c5dd6b483dace99dff199663e9c6ed0b019940a5b442a00c78685fc5bc48

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. The embedded URLs likely lead to malicious content or phishing sites, aiming to trick users into downloading further payloads or revealing sensitive information.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=that+70s+show+who+plays+big+rhonda
- https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/4063321.pdf
- https://mowolonob.weebly.com/uploads/1/3/4/8/134874237/701566.pdf
- https://zugasemoz.weebly.com/uploads/1/3/4/5/134593751/8707db16f5348b.pdf
- https://gunarolapikomi.weebly.com/uploads/1/3/4/4/134442839/214365c991e82c.pdf
- https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/gumositusox.pdf
- https://cdn-cms.f-static.net/uploads/4377408/normal_5fb2f55e5757a.pdf
- https://rebolotor.weebly.com/uploads/1/3/4/3/134364816/nebupizofinos.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/towakog/words_that_starts_with_hyper.pdf
- https://s3.amazonaws.com/zunewidimem/41936271276.pdf
- https://s3.amazonaws.com/getizar/jquery_slider_with_vertical_carousel_free.pdf
- https://s3.amazonaws.com/farowug/unblocked_games_for_school_zombie_apocalypse.pdf
- https://s3.amazonaws.com/solonebosop/fegetamizajaxodavitiwatik.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_off0000c749.bin` `44aac206d13ad18d1b147413c524fe2fb6556cebb2af1eac2bfde92b7c4b1a03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC749	5724 bytes
`font_01_sfnt_off0000dad2.bin` `21dda22bf29a80e78bfc3e4cd13e74923c327176f8285dda410e849d9692ef1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAD2	10472 bytes

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