Malicious PDF — malware analysis report

Static analysis result for SHA-256 898b6689a40c3bf4…

MALICIOUS

PDF

54.4 KB Created: 2020-08-14 01:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84ced0642bba65f6fda5ed49d59048b6 SHA-1: 497ecf5cc9ce8c8c73d0ee256704db760d00461f SHA-256: 898b6689a40c3bf47c14a48287feffc0a31c7cc7c621fdc53b0424e11afd791b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body contains garbled text and a reference to 'Asana create project template', suggesting a social engineering lure.

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=asana+create+project+template
    • http://wavegali.phylsfelt.com/uploads/1/3/0/9/130969723/ee1cec3cbd180d.pdf
    • http://files.bandedbird.com/uploads/1/3/1/1/131163718/fenovonupepuxud-gejubibonikuk-jazimi.pdf
    • http://files.merriteaseandmaud.com/uploads/1/3/1/4/131483275/6206654.pdf
    • http://miwima.bingbazi.com/uploads/1/3/1/4/131406436/juzul.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/fitufeniziripetiga.pdf
    • https://cdn.shopify.com/s/files/1/0438/4741/8016/files/acta_constitutiva_de_una_empresa_mexicana_formato.pdf
    • https://cdn.shopify.com/s/files/1/0447/0344/9241/files/rosetta_stone_farsi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/dopukebigemeriniguxowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6444/files/anatomy_and_physiology_questions_for_medical_coding.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/saton.pdf
    • https://cdn.shopify.com/s/files/1/0431/0168/3873/files/vasavuziwaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/51839878517.pdf
    • https://cdn.shopify.com/s/files/1/0433/4898/3959/files/design_drawing_francis_ching.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/48190230832.pdf
    • https://cdn.shopify.com/s/files/1/0437/7057/7045/files/gif_to_avi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/33397295272.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b08.bin
06006bf8da4074ee5c38b58b73b5b1c14831e2cf199ad52ae499938b5f2881a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 5144 bytes
font_01_sfnt_off00007c63.bin
9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C63 2092 bytes
font_02_sfnt_off00008604.bin
9dd91c7c0cb31b147985abd72946ecbf50c7ad90f289f43f10e52e3a1d621857
pdf-font-stream PDF embedded font (sfnt) at offset 0x8604 15456 bytes
font_03_sfnt_off0000b611.bin
ce720c0ed28cf53ff34ebd0daad11f2502afbedd5fd63e36433f1235092c4acd
pdf-font-stream PDF embedded font (sfnt) at offset 0xB611 16328 bytes