Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0e12e09b94d36c…

MALICIOUS

PDF

53.3 KB Created: 2020-08-05 11:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb58027d765296c5c51d51bb70f15422 SHA-1: 6c38f5b830748c4185d718b2ebf1bb0e7d875603 SHA-256: 8d0e12e09b94d36c368fbe1fb5a1ce6b8deb6ac6e64323396d1d7eb23dc7b195
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. It also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=benefits+of+social+media+in+business+pdf', indicating the primary lure is to click this link. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=benefits+of+social+media+in+business+pdf
    • http://files.officevalue.net/uploads/1/3/1/0/131070212/3742666.pdf
    • http://files.ryandavidbirdlarson.com/uploads/1/3/2/6/132683334/tufexuxu-zuwuj-zikomixek.pdf
    • http://files.tarotevolution.net/uploads/1/3/1/4/131452838/091ba1eecb06.pdf
    • http://files.leightonbuzzardpropertyblog.com/uploads/1/3/1/4/131483138/bezejaso.pdf
    • http://files.mossfrogoutfitters.com/uploads/1/3/1/6/131606003/526454.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/61463388916.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9892/files/not_enough_items_1._13._2.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/92403300639.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/vasini.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/87940607633.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/jitbit_macro_recorder.pdf
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/56752022629.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/super_mario_64_ds_rom_doperoms.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1557/files/lolekexirat.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/15657871906.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/62256221422.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/8726928547.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/dujodujanevemawasunoj.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_off000092f6.bin
82837c7ba44a0c8df9ff67585a3b11a25555adc88dc858ecee69b276970a114d
pdf-font-stream PDF embedded font (sfnt) at offset 0x92F6 5392 bytes
font_01_sfnt_off0000a53f.bin
2f0aacc670e873e6e0ede7cbdebe388dc83457fac9d532a39975e2efb2fd116c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA53F 10076 bytes