PDF malware analysis — malicious · 00d3b140ea051e7f

MALICIOUS

PDF

86.4 KB Created: 2021-03-15 12:12:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 0e29b49a9f67e7bfdd65b8d145b22daa SHA-1: 1d513839da1c56c2a44a900eb9c974123a1d3cd6 SHA-256: 00d3b140ea051e7f32e0dea08820f094f11d67154e19e46aa0b979e782d58eb1

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded URLs, many of which point to disposable hosting and appear to be part of a link farm designed to drive traffic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of external URIs points towards an attempt to redirect the user to malicious content hosted on external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/award?keyword=amazing+grace+piano+vocal+pdf PDF link annotation
- https://vaferomesab.weebly.com/uploads/1/3/4/3/134351928/6463127.pdfIn PDF document text
- http://xxlmature.site/english_vocabulary_word_list_with_meaning7czee.pdfIn PDF document text
- https://doxefifuz.weebly.com/uploads/1/3/0/9/130969363/9007852.pdfIn PDF document text
- http://menformula.xyz/53956172776pngti.pdfIn PDF document text
- https://cdn.sqhk.co/vixemujomu/hagehcp/45836186786.pdfIn PDF document text
- https://cdn.sqhk.co/zixagiko/6gjhb6l/saxogalux.pdfIn PDF document text
- https://wojanoxunoliwam.weebly.com/uploads/1/3/5/3/135394081/b398e4.pdfIn PDF document text
- http://blognews.top/xoxuwivasigugunoxilufofaleg8v.pdfIn PDF document text
- http://sks-expertiza.ru/kisawajerokhyk.pdfIn PDF document text
- http://podarokinsta.site/mofefofadegoruwetufvhxwh.pdfIn PDF document text
- https://cdn.sqhk.co/nijedesakuj/ejihdIo/zesulesawapaguw.pdfIn PDF document text
- https://kaposabebozof.weebly.com/uploads/1/3/4/4/134466843/4370196.pdfIn PDF document text
- https://nugaridepi.weebly.com/uploads/1/3/4/4/134474671/1914643.pdfIn PDF document text
- https://bobebizup.weebly.com/uploads/1/3/1/3/131381471/710752.pdfIn PDF document text
- https://gukikaxut.weebly.com/uploads/1/3/0/7/130775725/gufumeribaw_nigogo.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/miwolezedubujoz/windows_10_bootable_usb_format_type.pdfIn PDF document text
- https://s3.amazonaws.com/babuxufarizuxur/11724132483.pdfIn PDF document text
- https://s3.amazonaws.com/satudifin/75709430425.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ee02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE02	5104 bytes
SHA-256: `068e5a9fec8a0d2fa39b0cec98e4b119aae12605fc7be2d3df2d4b553daa3771`
`font_01_sfnt_off0000ff3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF3A	12028 bytes
SHA-256: `8de62eba95df8773d893ad7dcb9ef8d0dad71f274d7a68ab039e0da31dfcf2b3`
`font_02_sfnt_off00012820.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12820	16632 bytes
SHA-256: `d6aeca2d71d065aeba00d03c50d672d3ba05f186ce264dc70760bb3990d11dd0`
`font_03_sfnt_off00013f31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F31	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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