Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3daf551875f6c2…

MALICIOUS

PDF

73.1 KB Created: 2021-01-11 13:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 746ea10105497af22d89832a902ad6b3 SHA-1: 8fcb0c557ade20a21285bc58dc4d2bbbac9d7a03 SHA-256: df3daf551875f6c2864a1fb71d2b9f9af09428a82aaaac1821c4e092eee2a9f0
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL `https://traffking.ru/123?utm_term=gtd+audio+g+622h+manual` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the PDF and the malicious redirector suggest it's likely part of a phishing campaign or a downloader for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffking.ru/123?utm_term=gtd+audio+g+622h+manual In PDF document text
    • https://site-1172536.mozfiles.com/files/1172536/34878024055.pdfIn PDF document text
    • https://site-1172119.mozfiles.com/files/1172119/x_wing_flight_hack_apk.pdfIn PDF document text
    • https://site-1178505.mozfiles.com/files/1178505/super_adventure_world_platform_games_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5fc1baccd1b00.pdfIn PDF document text
    • https://site-1173584.mozfiles.com/files/1173584/calculating_absorption_rate_in_real_estate.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/h9hcT7x/planet_fitness_apple_valley_california.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/P5idchc/cut_it_off_meme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/20688914155.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/typescript_tutorial_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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f21c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF21C 21932 bytes
SHA-256: 41aafc61db49f180caace0f6d99bb6cc0d2249a965444a0e732bd4b0ba63fa32
font_00_sfnt_off0000baf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF7 5284 bytes
SHA-256: a3880b4f5027d567e7db84d7d57ca0ce2b042395ac5975da90b37bc22b6fcc18
font_01_sfnt_off0000ccd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD1 11040 bytes
SHA-256: f6037843ec04c0fc3ee425e0c369721452588249990d9fa8686c7c4cc996b86e

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