PDF malware analysis — malicious · 0c9d4d9a1539aff2

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 12:49:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 1d7195e3ad3dbfc46665211d28f83511 SHA-1: 6e0bf03057b90535a5cbf4405cf997aa7e64c1a0 SHA-256: 0c9d4d9a1539aff2a6310fa703689079b6b1c28abc1d1a0d2a106428e6e79082

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains text related to 'famous dave's rib tips', which appears to be a lure to disguise the malicious intent of directing users to potentially harmful external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9797

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
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
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://jumiwimov.ru/award?keyword=how+to+make+famous+dave%2527s+rib+tips PDF link annotation
- http://vulufinagi.mypressonline.com/51652083566.pdfIn PDF document text
- https://cdn.sqhk.co/tokofape/iejjgjm/31465215944.pdfIn PDF document text
- http://sdfsdfsdf.shaketorch.com/lenefanusake.pdfIn PDF document text
- http://rikafitamedad.medianewsonline.com/wd_my_cloud_local_dashboard.pdfIn PDF document text
- https://cdn.sqhk.co/numokafas/hhgJhgF/deep_space_rush_achievements.pdfIn PDF document text
- http://nitapida.mywebcommunity.org/what_type_of_bulb_for_range_hood.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kotutuvotijol.rf.gd/candy_crush_saga_game_apkmonk.pdfIn PDF document text
- http://folizel.epizy.com/81862266779.pdfIn PDF document text
- https://s3.amazonaws.com/votubukaxogilix/mathematics_2nd_year_notes.pdfIn PDF document text
- http://kunijudodo.rf.gd/16096411428.pdfIn PDF document text
- http://tivekanudoz.rf.gd/karodipowewez.pdfIn PDF document text
- https://s3.amazonaws.com/tofizo/metric_conversion_worksheet_1_answer_sheet.pdfIn PDF document text
- http://sovizaz.epizy.com/purevpn_for_windows_7.pdfIn PDF document text
- https://s3.amazonaws.com/vukumesoj/77011056745.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e513.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE513	5508 bytes
SHA-256: `1b5aaf1c3814ac678842b978e9ce8aada6ff9cde0c0b95f13f6a4b2aed7334b4`
`font_01_sfnt_off0000f7d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7D4	13356 bytes
SHA-256: `c335503eb0a0da73e125f29a1aa8ac32329bebeb67035d5585cfa4322ca0a5c0`

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