PDF malware analysis — malicious · faae00dba783f3f5

MALICIOUS

PDF

181.2 KB Created: 2021-04-01 17:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f69e404684dd48a3c75254976afc5781 SHA-1: 822edf3108d20e11250f98303bd0e208212f3896 SHA-256: faae00dba783f3f5489c616046832f58bed4624a0acbda7030004b8828211583

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9945

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://jacksth.ru/wix?keyword=hunter+x+core+controller+manual+run
- https://cdn-cms.f-static.net/uploads/4414173/normal_604437daa7855.pdf
- https://cdn.sqhk.co/rureroso/gDa0AMA/wheel_of_fortune_game_show_wiki.pdf
- https://static.s123-cdn-static.com/uploads/4459941/normal_6002d6c96c812.pdf
- https://static.s123-cdn-static.com/uploads/4477886/normal_6003b1add42a8.pdf
- https://cdn.sqhk.co/nuditufu/yhhXUyB/18818659691.pdf
- https://cdn.sqhk.co/tinolefowi/P9jf0XR/heroes_of_order_chaos_pc_download.pdf
- https://cdn.sqhk.co/jiloduvunilu/giIhhii/zijuf.pdf
- https://cdn.sqhk.co/gemesikexo/chedaje/ipad_2_drum_machine_app.pdf
- http://fontawesome.iohttp://fontawesome.io/license/
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_fa81fdb01f0f4dac928d9692f239ef56.pdf?index=true
- https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_5debf3f2a17c4c14954d7d714ef92a89.pdf?index=true
- https://f55c6975-0091-4942-a106-dc80285e5f9d.filesusr.com/ugd/8a4248_47f398733c914a6497454194a11f0620.pdf?index=true
- https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_353e5eaad6004f70baf97715c2f7bb52.pdf?index=true
- https://s3.amazonaws.com/zuvovoxigumuz/diwidusomewajonukopi.pdf
- https://8458b573-1d6d-478c-912c-b10a972f31df.filesusr.com/ugd/150112_f728552969a542a79bb609861e3f8e87.pdf?index=true
- https://uploads.strikinglycdn.com/files/e2f296ce-03af-4320-92bb-32502bd7971f/how_to_stop_candle_flame_flickering.pdf
- https://s3.amazonaws.com/nijosinizo/ecosystem_worksheets_3rd_grade.pdf
- https://uploads.strikinglycdn.com/files/e37c377a-4c26-42ef-84ab-ecf9abe5d1b8/kufig.pdf
- https://uploads.strikinglycdn.com/files/9596dda8-7724-4e45-9ec1-0fd2eec7f607/how_to_program_craftsman_1_2_hp_garage_door_opener_keypad.pdf
- https://uploads.strikinglycdn.com/files/669df2cb-9615-4943-854e-35bb99d3741c/la_declaracion_universal_de_los_derechos_humanos_30_articulos.pdf
- https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_ec6b77daf236423fa1dfa02827355714.pdf?index=true
- https://uploads.strikinglycdn.com/files/0671daeb-1e4e-41d4-804e-b9c1ea69173b/25583107915.pdf
- https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_f93328c0cd1d4131881a9f6b8919938b.pdf?index=true
- https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_e601c6c3ae174b53993f8328927ebe9e.pdf?index=true
- 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00026d49.bin` `6d13f9b60e6ab50273c4cd30e61cc67ab4efd2815a35aae0eaa4aab64b5da733`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x26D49	2152 bytes
`font_01_sfnt_off00027765.bin` `a0e649be9fe71527c4ea1032b08700cddc73d75ddfeb2c99482bf0a6e99b7b62`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x27765	4632 bytes
`font_02_sfnt_off000286f9.bin` `bc5e307ede78f986e5aa7ccb63a236b748418567d36a6c9f321b1a5cb480cde6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x286F9	15940 bytes
`font_03_sfnt_off0002b7ab.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2B7AB	4324 bytes

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