PDF malware analysis — malicious · 0df43c75826c2c07

MALICIOUS

PDF

101.7 KB Created: 2021-04-07 09:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 33be7101c9b13f8f05b205a27085f346 SHA-1: 95600c797fe66e9cf641fc857f047c2b22c56b2d SHA-256: 0df43c75826c2c07d5e9af40b8d3a08f225abee19a2b8c7ad57d033607103c6d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs, one of which, https://golowaki.ru/strik?utm_term=dusk+till+dawn+song+meaning+in+hindi, is flagged as malicious. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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://golowaki.ru/strik?utm_term=dusk+till+dawn+song+meaning+in+hindi PDF link annotation
- https://cdn-cms.f-static.net/uploads/4476751/normal_6021eec0ca58e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419630/normal_6042e1ec31c60.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465145/normal_6019c021406f3.pdfIn PDF document text
- https://netulomite.weebly.com/uploads/1/3/2/8/132814473/libofuvizavanopa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470545/normal_60403c19cd15c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413226/normal_5fe004db3e09f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486565/normal_604ce7aec3e98.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369912/normal_6045db6f67faf.pdfIn PDF document text
- https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/27a6208e37a51.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4486356/normal_5fe569cf54ac8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415951/normal_600a144229977.pdfIn PDF document text
- https://mugaditovamamuk.weebly.com/uploads/1/3/0/7/130776340/1897938.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/dad22cd1-ddc9-4044-a77c-ffad7dc5567f/59034450316.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/702965ef-876e-45f4-b765-d1ff4ec06185/best_dc_comics_series_to_read.pdfIn PDF document text
- http://puzasapexuwuju.epizy.com/towiju.pdfIn PDF document text
- http://wamesugome.rf.gd/58974070778.pdfIn PDF document text
- https://s3.amazonaws.com/vanatul/express_vpn_free_trial_mod_apk.pdfIn PDF document text
- https://s3.amazonaws.com/vazisi/49463110073.pdfIn PDF document text
- https://s3.amazonaws.com/muvevanepen/44295429778.pdfIn PDF document text
- https://s3.amazonaws.com/xepululejiwof/23826360538.pdfIn PDF document text
- https://s3.amazonaws.com/xumakomowi/autocad_civil_3d_2019_keygen.pdfIn PDF document text
- http://xojozemuxubiv.epizy.com/jogefi.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_off00012ebb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12EBB	2900 bytes
SHA-256: `c4c77de79185a6e32b969612b4158c72aca0a6965e648bc7cf893bc7a336abbf`
`font_01_sfnt_off00013915.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13915	5296 bytes
SHA-256: `53d13a4947f4c1647a4dbb261dbaebf492e7e18370c0a72bedbd6056f022b7ed`
`font_02_sfnt_off00014b12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14B12	12956 bytes
SHA-256: `aadf325c5668943bdb5f6b8d1ab81afd669595677ad5d3eb6acdfd0b2710fcc0`
`font_03_sfnt_off000174d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x174D3	16100 bytes
SHA-256: `2bac0d7445fe5768be44ad7a0943804bdfa4a71883f7703ca85e4e7e3f76abd8`

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