Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa9ed2b6b4684aa…

MALICIOUS

PDF

55.2 KB Created: 2020-08-15 01:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e3b20f8e69e47dfaa9aa468acf9d1ac SHA-1: 912bb300f0f437c253022d534e3dd249d71db898 SHA-256: 4fa9ed2b6b4684aab193f217c710acc2db57799038ba7a8f8d15c051bcd4f1f2
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text related to a fishing report and the malicious URL. The presence of numerous external PDF links, many pointing to Shopify domains, suggests a link farm or SEO poisoning attempt to distribute the malicious content.

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=jingles+bait+and+tackle+fishing+report
    • http://files.morlandteachesart.com/uploads/1/3/0/8/130814423/a794fdc.pdf
    • http://files.kookiesandkreamsarasota.com/uploads/1/3/2/6/132682974/kusowidikor.pdf
    • http://files.canyoncitygrill.com/uploads/1/3/1/8/131859895/3977882.pdf
    • http://files.etotdelaware.net/uploads/1/3/1/8/131860787/89aa3.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/anthranilic_acid_synthesis_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4975/3507/files/how_to_use_game_guardian.pdf
    • https://cdn.shopify.com/s/files/1/0429/1539/7788/files/natisorobogexitemirol.pdf
    • https://cdn.shopify.com/s/files/1/0436/1401/1555/files/diplomov_prce_upol.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/siwomewapudemilexoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/90990605834.pdf
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/bepobagaxukibolukafawuso.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/soteju.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/diagnostic_microbiology_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/holy_bible_reina_valera_1960_in_english.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_off000098fd.bin
4836ddffed29a10677f161227d2ef767d4447bcf9afe5c05617031414f23e6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98FD 5612 bytes
font_01_sfnt_off0000ac01.bin
0e093255a7f8172e5f4343b45e1bd17a685db84d61cfa1c6c42c2bd540026d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC01 10504 bytes

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