PDF malware analysis — malicious · 08f1b68cc7f10a8a

MALICIOUS

PDF

62.7 KB Created: 2020-12-24 04:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: df8c2cf94437cc1e920aad38a94f3b88 SHA-1: 30917e429cb6ed01eb0aba3f30b1b212931cb68d SHA-256: 08f1b68cc7f10a8a74a8b89d98cb90effcd925839813888cb1a32a639d18b277

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm. The embedded content, though heavily obfuscated, likely serves to direct users to these external resources, potentially for phishing or malware distribution. The primary IOC is the initial redirect URL found in the document.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

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 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.
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://trafficel.ru/strik?utm_term=color+block+cardigan+plus+size PDF link annotation
- https://cdn-cms.f-static.net/uploads/4388050/normal_5fb38a7f5be61.pdfIn PDF document text
- https://zanafulifefa.weebly.com/uploads/1/3/4/5/134596365/5600170.pdfIn PDF document text
- https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/rowefipojupuziki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426830/normal_5f9d39cbe049c.pdfIn PDF document text
- https://gukijofajileraw.weebly.com/uploads/1/3/4/3/134392650/b14d23.pdfIn PDF document text
- https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/rofajegirobeweve.pdfIn PDF document text
- https://nixoferijoxe.weebly.com/uploads/1/3/4/3/134373865/8838484.pdfIn PDF document text
- https://cdn.sqhk.co/goremujoz/R1kQMAT/83753253393.pdfIn PDF document text
- https://pafazemewo.weebly.com/uploads/1/3/4/5/134517711/2aa9fd6c5988.pdfIn PDF document text
- https://cdn.sqhk.co/daxutoxod/FgfjjdP/80s_anime_iphone_wallpaper.pdfIn PDF document text
- https://malugerimume.weebly.com/uploads/1/3/4/8/134846891/monaxemarikik_somirewa_bereseluforoxin.pdfIn PDF document text
- https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/4424362.pdfIn PDF document text
- https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/ritikilo_lerabirebe_zitulida_lagevosagunixow.pdfIn PDF document text
- https://zimegusak.weebly.com/uploads/1/3/4/6/134605775/xojedax.pdfIn PDF document text
- https://bopatixenokukab.weebly.com/uploads/1/3/4/8/134873261/xavuruwu.pdfIn PDF document text
- https://gipafefigemer.weebly.com/uploads/1/3/4/0/134097902/tewowukesaj_zilusamo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/vesubodufisi/nepejemide.pdfIn PDF document text
- https://s3.amazonaws.com/luxelula/vinuzenutegedegufoxalugez.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000af20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF20	5320 bytes
SHA-256: `47fa3a88586e894af61bca5c5e42c957b5eaeacd6025f72ae01913bf26487735`
`font_01_sfnt_off0000c13b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC13B	8756 bytes
SHA-256: `834c2da22b97ea833662c14ca81f17da7590a05027d16029a9087ac308e68429`
`font_02_sfnt_off0000df33.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF33	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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