Malicious PDF — malware analysis report

Static analysis result for SHA-256 30693a456a0929d6…

MALICIOUS

PDF

45.2 KB Created: 2020-08-11 07:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 369007da9651a3c7e5d1af4ef66d5b9d SHA-1: a2de574115e114bebe4e1646aa932fe9dd306885 SHA-256: 30693a456a0929d66c4e918297b761878123675d98f2bf5077b595c2f87bbae0
152 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content broadly. Crucially, one embedded link redirects to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to downloading a technical book and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=strength+of+materials+by+rk+rajput+pdf+file+download
    • http://files.soflamsc.com/uploads/1/3/2/6/132681452/solulite_wifuvekolaje.pdf
    • http://files.homestay-laos.com/uploads/1/3/2/7/132740264/niketemamagig_ruvanevu_zesovo_jigefebuxerunuv.pdf
    • http://zexudel.samanthasunday.com/uploads/1/3/1/1/131163599/rexuji_pisakizop_fewaz_ximugagi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/akai_pro_software_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3833/2312/files/dasoxetezukopujelenokesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/kexudiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/jodani.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/how_to_cheat_on_typing._com.pdf
    • https://cdn.shopify.com/s/files/1/0435/5178/5109/files/squamous_cell_carcinoma_of_buccal_mucosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2004/files/speak_your_mind_1_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/76673954782.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/rodunexi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/bartolinitis_tratamiento_antibiotico.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/66865659577.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/
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/bartol

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060eb.bin
c0ad21bc31692d2bc78d68e62b5ec8ec428fe625d6a0c1d0eaf9d16adf85cde0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 5916 bytes
font_01_sfnt_off000074e0.bin
077682bfdea89579ff82f31322d9b8207e8a352a6928d07dd21e15d8671847af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E0 10572 bytes
font_02_sfnt_off00009923.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9923 4324 bytes

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