Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb536bfaa0fbabd…

MALICIOUS

PDF

35.6 KB Created: 2020-11-03 08:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a619215755058890c22c1d54b1c4700d SHA-1: a08a6304a177d43f98c54f3814ef632ac3342a2b SHA-256: dcb536bfaa0fbabd4af82d7faa7bcfa9745076cbf751cf6a52094e27d61ac318
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/123?keyword=desi+tv+serials+online'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.com/123?keyword=desi+tv+serials+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_5f9a6b85b7d55.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/wovikadosalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386336/normal_5fa0ba9fd07d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3656/4375/files/pepadip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1b7c19-fcff-4829-a45f-d5932ac70cf2/what_is_the_purpose_of_laws_in_a_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1942/files/play_mkv_on_android_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7b06712-8913-4569-a430-ed498d436041/elite_dangerous_turret_mining_laser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9137/1196/files/dobranoc_panowie_nuty.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/yusa_guide_to_balance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7898/9462/files/contaminacion_auditiva_y_visual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9022/9413/files/ocean_nomad_raft_survival_mod_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4835/3959/files/30359582612.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/vupowukavix.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_off00004ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDB 4736 bytes
SHA-256: 6a82ea111b6cd010e45fcf2d092c0ade87ffefe2f4424359284ad7afc18dfda0
font_01_sfnt_off00005e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0C 10556 bytes
SHA-256: 47dcf733471f23564aa72972f4c908291a6e1223542d151fe76b0c8197836b99