Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c0eacc2706348e…

MALICIOUS

PDF

44.2 KB Created: 2020-08-06 07:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02031ebb500b216bf7128a2aa824fbf0 SHA-1: a1c389d5b29160438ec910b99ca6783a60fa8e8c SHA-256: 33c0eacc2706348ec06de9142885c03ac5d8e73881568aec6b615a606210b664
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious link, 'https://ttraff.cc/pify?keyword=film+genres+pdf', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to 'film genres pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious links as legitimate PDF downloads.

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.
  • 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.
  • 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.cc/pify?keyword=film+genres+pdf
    • http://files.broncohack.net/uploads/1/3/2/6/132682862/tozesizuz_desejibisinosol_dewuzovukazek_fabawamugif.pdf
    • http://files.dwarvenworkshop.com/uploads/1/3/0/9/130969312/545f8b6bc332a.pdf
    • http://files.bijouxbychloe.com/uploads/1/3/0/7/130775528/2a0efcfad4eb6d.pdf
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/91432114626.pdf
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/posture_correction_exercises_upper_back.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/86873730295.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/panduan_belajar_bahasa_cina.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/kumikukozafun.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/64523767427.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/naruto_shippuden_episode_280_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/don_t_forget_the_lyrics_game.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/zefozujaso.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/87924763844.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/lejusirubafuvodidis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/86673908153.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7751/files/pan_application_form_fillable.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa9.bin
47441448d3672b1e499c7e29a82154e0af9f575118b0cccfc64ae3a9b3c34b36
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 5108 bytes
font_01_sfnt_off000080fb.bin
4a73afe2cc6336f31f5cf7adbb9d49a2968c7fb57636d28bac364c6174a30b9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x80FB 10320 bytes