Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bd1c45d2f90a9c…

MALICIOUS

PDF

61.5 KB Created: 2020-12-20 21:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 914f01b01d6907126d49848cd239a07f SHA-1: 2c2fa2946947cbb2e75b58a49f3fb8f2ae11dd55 SHA-256: e0bd1c45d2f90a9ca33f0f6fba73adc7e7bad2c29f2b7b08411cfe9237bcf917
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link to 'traffnew.ru' which is presented as a download for 'super pac-man'. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting it's part of a larger malicious infrastructure designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/strik?utm_term=super+pac-man+download
    • https://muwidewosavuli.weebly.com/uploads/1/3/4/4/134435377/402328.pdf
    • https://wufenimikefi.weebly.com/uploads/1/3/4/3/134366244/depunepuk.pdf
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/8a740c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc36ab7a879396864183595/t/5fc560ae3c02f22b9dc08047/1606770863376/ub_funkeys_software_download.pdf
    • https://s3.amazonaws.com/pujirageg/actualtests_cissp.pdf
    • https://s3.amazonaws.com/diwitapezu/47596519953.pdf
    • https://s3.amazonaws.com/vekodupiwarobi/pirejiru.pdf
    • https://static1.squarespace.com/static/5fc6ac042e537a05ef314d38/t/5fc7fb826a01250e328aabd7/1606941573880/old_man_s_journey_android_apk.pdf
    • https://uploads.strikinglycdn.com/files/33e115e0-652e-4994-b497-0cfac0004b6b/19064236024.pdf
    • https://s3.amazonaws.com/bezegoluzose/wuravonujobirejepivujej.pdf
    • https://s3.amazonaws.com/bevarolimesale/explain_theories_of_motivation.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b353.bin
bc6cc0b44fda40dd32fa58458059450290650c80e93c4c0557960de6c091242b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB353 5268 bytes
font_01_sfnt_off0000c540.bin
6b240c97992e5c53a339a28dff62d55b7f792464273d4507789e6b2375e1f391
pdf-font-stream PDF embedded font (sfnt) at offset 0xC540 10320 bytes