Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a47887f03c2c03f…

MALICIOUS

PDF

35.7 KB Created: 2020-08-23 00:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f574a1f0d0030bbbc297030a5fd4951 SHA-1: 4eadd8e5f0e67d5301e55c3846ba2395daea14ab SHA-256: 1a47887f03c2c03f99792d05b99c7857ed5c82884a9afa759d26977fb4f15111
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=badinerie+guitar+sheet, which is flagged as a malicious redirector.

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.com/pify?keyword=badinerie+guitar+sheet
    • http://files.gokulsarma.com/uploads/1/3/1/4/131453384/kojizumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/captivating_stasi_eldredge_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/cadsofttools_to_dwg.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/a_practical_english_grammar_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/general_affidavit_form_california.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0175/files/firotawonosas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6370/files/62864823887.pdf
    • https://cdn.shopify.com/s/files/1/0453/5540/1371/files/cuddl_duds_flannel_sheets_twin.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0822/files/kimatow.pdf
    • https://cdn.shopify.com/s/files/1/0430/8775/7461/files/14831732066.pdf
    • https://cdn.shopify.com/s/files/1/0433/6441/7695/files/relevo_da_caatinga.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_off00004daa.bin
31bac668bfceaab2de7ed869a39ec724da8cfad8f5f5f85481e39431edb0e87c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAA 5104 bytes
font_01_sfnt_off00005ef6.bin
7a1b80f3e715ab2f13ed4e161c4fa7462199d8c8db75b76338e4dd6b43497742		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 10452 bytes

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