Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b3c39b9cfcd44c…

MALICIOUS

PDF

43.5 KB Created: 2020-10-08 05:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ccee04c3762388c8dea7cd1c1db933a5 SHA-1: f87c8b9d079d88df367e663bc18c3d1acab2c2ed SHA-256: 46b3c39b9cfcd44c899e9d9198eb532b05152fa30cf9540ad3549a039abc3a30
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded links, with one specifically pointing to a known malicious redirector infrastructure at `https://cctraff.ru/strik?keyword=lindsay+adler+posing+guide`. The document body, though heavily obfuscated, contains text related to a 'posing guide' and the authoring application 'wkhtmltopdf', suggesting a lure. The presence of numerous external PDF links, many hosted on disposable domains, indicates a link farm designed to distribute malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=lindsay+adler+posing+guide In PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/69758422901.pdfIn PDF document text
    • https://site-1039775.mozfiles.com/files/1039775/divavujiwinenogifipaxus.pdfIn PDF document text
    • https://site-1036930.mozfiles.com/files/1036930/21028878922.pdfIn PDF document text
    • https://site-1043958.mozfiles.com/files/1043958/64041678236.pdfIn PDF document text
    • http://files.canyonchurchcamp.com/uploads/1/3/1/3/131381078/1412099.pdfIn PDF document text
    • http://files.jodievees.com/uploads/1/3/1/4/131452991/tarawezosukor.pdfIn PDF document text
    • http://files.headstrongequestrian.com/uploads/1/3/1/8/131856330/427beb8a7731.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/b420996b-0b87-4105-a982-f1473de78c3a/nufaruvop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6468c49-def0-49cc-9a34-6f36095317e2/27814100918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0828097-ff3a-4e32-ba2a-3ff9247bb32f/roxusagidifaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb3bc67-6532-4cc3-9fcb-c18d3f6b162f/wofipalenesabomobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67524c9e-07a8-44e5-ac8d-9f2682ad6a07/vekelijodow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5648/2472/files/xezilogibipozaniwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/1986/2694/files/ambient_weather_ws-2902_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5552/0675/files/luzefonafesid.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABE 5172 bytes
SHA-256: 3d2c9a4403f7f854a01888cef324daf4e3233460bdb2c14599a0975609773ae4
font_01_sfnt_off00007c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 11128 bytes
SHA-256: ff90e4002b93690d6ad4ec0073f13d22401aa62b04783611f71b2a339b665af3

Open this report in the interactive analyzer, or submit your own file for analysis.