Malicious PDF — malware analysis report

Static analysis result for SHA-256 317f4958ce0ecbc4…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 10:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7da0726baed346fafb1bf05bd724e28 SHA-1: b1d2badde872d00eb81358310e7cb61a1b58bea7 SHA-256: 317f4958ce0ecbc45db0a1ab25f1579f7e24a8d3864580b8e621eeb85e6baeba
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, suggesting a link farm or SEO abuse. One of the primary links, 'https://ttraff.com/pify?keyword=antebellum+reform+time+period', is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL, reinforcing its role in a redirection scheme.

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=antebellum+reform+time+period
    • http://wezusegis.main-global.com/uploads/1/3/1/0/131071181/1e0999b4.pdf
    • http://files.rustlingmeadows.com/uploads/1/3/1/8/131856698/d6c8bf93bd.pdf
    • http://files.hboierc.com/uploads/1/3/1/3/131382274/603442.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/bopowawapifivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/25030689780.pdf
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/muzonopupofesuzakafigetuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/6634375820.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/electrodynamics_griffiths.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/76445821364.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/30118901580.pdf
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/ayatul_kursi_in_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/rifojanipef.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5967/files/gudibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/below_is_the_information_for_your_reference.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/police_car_alarm_clock.pdf
    • https://cdn.shopify.com/s/files/1/0439/4886/7742/files/sony_bm10_bluetooth_music_receiver_manual.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_off00006a5d.bin
b595100bebacb7f52a656b4873d3ca3f6048f4406ac08b94e12c314af59e2daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 4928 bytes
font_01_sfnt_off00007afd.bin
5902a8d7d31e6f0916ae46073e4834e1df12a4d654592bc31839281718d96df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFD 10040 bytes

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