Malicious PDF — malware analysis report

Static analysis result for SHA-256 334ffa99ade718ca…

MALICIOUS

PDF

47.0 KB Created: 2020-08-10 17:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e733e3c68cc87d05299748b0ca8300c SHA-1: 0022f33b53b1af8bd69d232fa6d959b28896d4a6 SHA-256: 334ffa99ade718cac9f095c1a2c3675d44d9cb1845e8d88093b61653f8bf82ce
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF title related to medical conditions, likely intended as a lure. The primary goal appears to be redirecting the user to malicious infrastructure.

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=hernia+inguinalis+strangulata+pdf
    • http://files.scandinavianmom.com/uploads/1/3/1/3/131383514/firenu_kofolilijejin.pdf
    • http://files.iispsc.com/uploads/1/3/1/4/131437181/6921577.pdf
    • http://files.eastmtnculture.com/uploads/1/3/1/6/131606526/4d6b7.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/carbohydrates_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/66892515734.pdf
    • https://cdn.shopify.com/s/files/1/0434/7586/1656/files/slimming_world_free_foods_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0792/6687/files/boltzmann_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tajutulavepa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/23233471045.pdf
    • https://cdn.shopify.com/s/files/1/0435/1636/2904/files/adventist_hymnal.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/rixixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/49547192259.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/lilanagowubivurotimod.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/
    • https://cdn.shopify.com/s/files/1/0433/0805

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2a.bin
419890515fc74207a5210e86370f39b1eea26a3993df2c912f9115cd3055c73c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 4944 bytes
font_01_sfnt_off00007cfc.bin
eda2a66b8b23082d558598689bcbd398f32d22b93416264108ee31302015d5b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 10508 bytes
font_02_sfnt_off0000a0ba.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BA 4324 bytes

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