PDF malware analysis — malicious · 6c06298df11042c8

MALICIOUS

PDF

109.8 KB Created: 2021-03-08 22:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: a12a2122cc9330b635445f650ae7f7c0 SHA-1: 59549696fda727661ebbaeec952485c95b009d04 SHA-256: 6c06298df11042c84fb5c9c4f044b1d1ab575f87cf27317ed8364cc3e6baeb1b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'resalured.ru', suggesting it's used to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains keywords related to 'utility trailer parts catalog' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious nature of the PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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://resalured.ru/award?keyword=utility+trailer+parts+catalog+pdf PDF link annotation
- http://sogikujuwawim.22web.org/bokulitatedajidikogis.pdfIn PDF document text
- http://xilelul.iblogger.org/totufitojalesixexe.pdfIn PDF document text
- http://wopudidadufi.22web.org/weteg.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4501041/normal_5fef65fe12261.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4491927/normal_5fc95268ba53a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470040/normal_5fcf9fe4dab5b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://norenuwidubeg.rf.gd/20482983049.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d0fb775b-7a23-49d5-902b-373b8dc06c58/xbox_one_wireless_controller_pc_not_connecting.pdfIn PDF document text
- http://texelodefa.rf.gd/4981118671.pdfIn PDF document text
- http://tutivute.epizy.com/cheetah_form_wow_classic.pdfIn PDF document text
- http://jenesigafepi.epizy.com/xabazijobe.pdfIn PDF document text
- http://sojatuduko.epizy.com/kaplan_sat_math_prep_free.pdfIn PDF document text
- http://bimizuzaf.rf.gd/fagizobuwamamezozume.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/28fa1e24-8318-41a3-ab30-45a565d5a62c/estructura_de_un_manual_de_funciones.pdfIn PDF document text
- http://nuforikoxiv.epizy.com/45136662790.pdfIn PDF document text
- http://bejewidokani.rf.gd/payback_movie_300mb.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a31a8c37-0cbe-4b1f-887b-36c297d9cf1f/how_do_you_unjam_a_nail_gun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa6a15f3-c814-4721-8d61-c23172e2c3c0/65372601873.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00012f18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F18	3664 bytes
SHA-256: `0d06f19659d9c7acbc361de337a4f99e548dec232ad9570b4d9b6338e70e1543`
`font_01_sfnt_off00013c3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13C3E	5416 bytes
SHA-256: `df82e2348a658e457e11225582a2023cb5cc59c22cf02ffbaf3a73a28fe79c51`
`font_02_sfnt_off00014ebc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14EBC	6836 bytes
SHA-256: `fe408241139d21869058269e0fbd0f5e2d29ee5ce78f5cc4f8d0d2e5e345d49a`
`font_03_sfnt_off0001652b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1652B	11380 bytes
SHA-256: `ab2bc42aac9195c6035cff4cacf2fb04a64420d33029b11910e95f307e6f6226`
`font_04_sfnt_off00018b2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18B2D	18648 bytes
SHA-256: `85e0aa32e8291c31093e722b243e05c885294669c10d1630816b00dd715023f3`

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