PDF malware analysis — malicious · 3bfaf67e90b839c9

MALICIOUS

PDF

81.3 KB Created: 2021-05-26 06:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16

MD5: cde61bc37a21f2b5ac8e02fb54c0e764 SHA-1: bb9d4b65f6dcfef87cebe84b92dbbf957b6d6741 SHA-256: 3bfaf67e90b839c98d40901b5049d339cc6ac362290ac5733c202b3c603ea4b5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified as a PDF link farm, with one prominent URL being https://druttle.ru/strik?utm_term=galaxy+attack+alien+shooter+codes. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and heuristics suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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 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.
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://druttle.ru/strik?utm_term=galaxy+attack+alien+shooter+codes PDF link annotation
- https://cdn-cms.f-static.net/uploads/4465144/normal_604cc6ea52cfa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410965/normal_600592669811c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450638/normal_605a39059ea00.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457861/normal_5ffa3ef2c7d4f.pdfIn PDF document text
- https://benodamefeju.weebly.com/uploads/1/3/5/3/135346815/rekafu.pdfIn PDF document text
- https://fefoxotavom.weebly.com/uploads/1/3/5/3/135328849/5257676.pdfIn PDF document text
- https://wetuwisiw.weebly.com/uploads/1/3/4/4/134495793/4f21441c4.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/18cfff8e-479b-4b0c-8865-30c47b1f4cda/epson_gt-s50_repair_manual.pdfIn PDF document text
- https://s3.amazonaws.com/jifedefujodu/costing_sheet_for_garments_template.pdfIn PDF document text
- https://s3.amazonaws.com/dekogamik/cuanto_pesa_un_metro_cubico_de_arena_comun.pdfIn PDF document text
- https://s3.amazonaws.com/wofaxil/33305735638.pdfIn PDF document text
- https://s3.amazonaws.com/sugosubexez/arthdal_chronicles_ep_10.pdfIn PDF document text
- https://s3.amazonaws.com/napisakaluja/26710088056.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/90958a9b-a1fc-49c1-baa1-a7a9ac33d670/jusag.pdfIn PDF document text
- https://s3.amazonaws.com/zafaronivaj/nokunumofeloke.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd9339ed-b114-424d-a4ea-726fe1ed97ac/sql_server_interview_questions_and_answers_for_experienced_professionals.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/32ed9131-8e32-4e16-9a9e-275258ba8479/fifizepevuzorajolawilemim.pdfIn PDF document text
- https://s3.amazonaws.com/gizonukorad/battlefield_4_commander_apk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7f72763b-2b12-433d-a6f5-d5267d0b5408/75389705703.pdfIn PDF document text
- https://s3.amazonaws.com/sorogamat/guns_germs_and_steel_analysis_essay.pdfIn PDF document text
- https://s3.amazonaws.com/lopadivupudexa/avatar_gaming_logo_free.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_off0000df58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF58	3088 bytes
SHA-256: `b2777e3f310de2dc2e598172f0a7820630b23ab55d0d4ffdf85e527f0f16dc51`
`font_01_sfnt_off0000ea5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA5E	5292 bytes
SHA-256: `bf6c862de92ea00580ac9db5ce6b51a266cf5e71f6de07a836c0f7bcf8b1ee42`
`font_02_sfnt_off0000fc63.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC63	10952 bytes
SHA-256: `40eb2f4d7d99f074d1614f08537fc8440411653723cfd99677809d41b8c0a439`
`font_03_sfnt_off0001221c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1221C	16160 bytes
SHA-256: `71fec8a3adfe41455811528c654ef740a0d97889ddd19e39e153b04b7507b7f0`

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