Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3304b60f367225…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 21:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ec237d4ec697c06275a90b20f612878 SHA-1: f5902606af7f8947bfbffa5675369fd6f909158e SHA-256: 2c3304b60f367225b025117c6a1acfd35a3466f88d1fe9210db035cbb5cb556e
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=bsa+entrepreneurship+merit+badge+worksheet'. This URL is presented within the document body, disguised as a worksheet for a merit badge, indicating a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or redirection strategy. 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.com/pify?keyword=bsa+entrepreneurship+merit+badge+worksheet
    • http://files.isobelchurch.com/uploads/1/3/1/3/131379168/tuzobef-bigafafovivopin-zagaxoduteperaz.pdf
    • http://files.communitycatcenter.com/uploads/1/3/0/9/130969993/fedagulag.pdf
    • http://vupetoxo.2ndhandranch.com/uploads/1/3/2/3/132303382/9154236.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/lifozam.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/wanemapuzekuvo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8042/3326/files/76210071072.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/spider_solitaire_free_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0450/2283/8934/files/profit_and_loss_account_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/betinget_formatering_power_bi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/92881260637.pdf
    • https://cdn.shopify.com/s/files/1/0438/2038/4416/files/morrowind_patch_for_purists.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/catecismo_catolico_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5985/3977/files/pressure_relief_valve_calibration_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/wajatewebowamiberorabunab.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_off0000612b.bin
bd761f13d0ff01509f946acf375ffab692179c4ce5180441b1560282616d2c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 5684 bytes
font_01_sfnt_off0000745e.bin
de7498726d6f2c40bb842522cd9a7b2ef8fa754ff68104a4d9803de58f9b26f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 10160 bytes

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