PDF malware analysis — malicious · 605334f81b5a777d

MALICIOUS

PDF

75.9 KB Created: 2021-02-24 02:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3fb106d4d8a398a37322d1451620de18 SHA-1: d75afa235166ab4d1795976837839b36631c028b SHA-256: 605334f81b5a777df4e91a53e89f091d3de4a087648f12cd99df4b3acb34521d

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 trojan. It contains an embedded URL that appears to be a lure, directing users to a site related to 'google sites favicon size'. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://jottigo.ru/wix?keyword=google+sites+favicon+size
- https://cdn-cms.f-static.net/uploads/4369174/normal_602756622787a.pdf
- https://cdn-cms.f-static.net/uploads/4406775/normal_5fd8c3e49ed20.pdf
- https://static.s123-cdn-static.com/uploads/4455639/normal_6005bd09c09f1.pdf
- https://manomukujoputu.weebly.com/uploads/1/3/4/5/134517900/zibamobar.pdf
- https://static.s123-cdn-static.com/uploads/4368956/normal_5fc68a518f9a8.pdf
- http://topitoxituzoju.iblogger.org/gugutuxufavu.pdf
- http://sovetnik53.ru/definition_visual_cultureyh86b.pdf
- https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/foraxotibi-kixerasese.pdf
- https://jewefero.weebly.com/uploads/1/3/1/3/131383264/24dc18254.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/xupovobejanam/2016_chevy_malibu_ls_manual.pdf
- http://silimevi.epizy.com/calligraphy_apps_free_android.pdf
- http://jevetadubexega.rf.gd/89546700860.pdf
- https://s3.amazonaws.com/zufaxepixiguxax/rifinijepanifanobuxej.pdf
- http://fukanabe.epizy.com/what_is_cmyk_color_code.pdf
- https://s3.amazonaws.com/zalomi/48917510381.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_off0000e074.bin` `94f776a5c94a9a1062b19036912a89eccd8db6a187cbc8e5d69bd7491c42232a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE074	4884 bytes
`font_01_sfnt_off0000f138.bin` `6fdcb30e133d9f83b027348b2894db1ad39cc6547f8d0d8018d4fa85539cd7b1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF138	10392 bytes
`font_02_sfnt_off000114b4.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114B4	4324 bytes

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