Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb954823039f6aea…

MALICIOUS

PDF

52.4 KB Created: 2020-09-01 03:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a77394c69a927950daa3abf5a486ffb5 SHA-1: 94c8fb0d22e6d8588ff51ca38bfd9509513949ae SHA-256: eb954823039f6aeabf57e21fe72141f4b01b78acdc0d5d995838c253d5a737f6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=sheets+and+giggles+jobs'. This URL is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains references to the same URL and a Shopify URL, suggesting a lure to a malicious resource disguised as a job search. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=sheets+and+giggles+jobs
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/methods_and_approaches_in_english_language_teaching.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/faduxeroj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/administrao_da_produo_e_operaes_moreira.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6161/files/armature_reaction_of_dc_generator.pdf
    • https://cdn.shopify.com/s/files/1/0439/5932/0734/files/dog_clicker_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/capraria_biflora.pdf
    • https://cdn.shopify.com/s/files/1/0446/7281/1171/files/treatment_guidelines_for_asthma_attack.pdf
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/addition_and_subtraction_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0435/9536/6559/files/89879520101.pdf
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/lovijopinejadexegoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/58124229889.pdf
    • https://cdn.shopify.com/s/files/1/0428/5176/2343/files/togusokirezufekubaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/zematomopagezofadosuvavip.pdf
    • https://cdn.shopify.com/s/files/1/0438/3123/0614/files/csw_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/9357/1224/files/alchemist_character_sheet_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sixapuxinisoponexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/dilujaneretavarunoxe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007636.bin
d9c8a026ac0ba26e2a7e0b28d966bf11bfb1785eb76849cd8e49c60267efed56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7636 5312 bytes
font_01_sfnt_off00008841.bin
0effa4fa6112a9ab2797b10e7ea0c2af53b7a3c5aeac05941fc9fc77e5ba092c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8841 10936 bytes
font_02_sfnt_off0000ad8c.bin
c64f975c7c74378765a15e192890ba001b575443647995d4109c17b56814fb1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD8C 16544 bytes

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