Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9347e40444c1326…

MALICIOUS

PDF

40.3 KB Created: 2020-08-04 10:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65831c6a4b5e86c116310a63f9af2c1b SHA-1: 16ce6c4dfb33b6f6bb226857aa7547bc94263b99 SHA-256: f9347e40444c13265fe2c1c15cf5f82182bb13e909c60652305941012e496e93
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a phishing or scam attempt, likely using the 'Cambridge pet test pdf' lure to entice clicks. The document body is heavily obfuscated but contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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.ru/pify?keyword=cambridge+pet+test+pdf
    • http://files.popmonkeytv.com/uploads/1/3/1/6/131607010/luzamewexedawaworafa.pdf
    • http://zexir.courvoisiercentre.com/uploads/1/3/1/0/131070581/ximidizewepub-zitisuj-konidewu.pdf
    • http://files.coscinecreative.com/uploads/1/3/0/7/130739509/4321683.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/xenunifawirikedam.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/68723929926.pdf
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/remuvukusanapixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/80293744204.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0590/files/41625343042.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/pharmaceutical_quality_assurance_and_quality_control.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/rowogukerigudezaxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/wadubasivuvudugezaja.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/dezupapinolunotesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8765/files/15535916110.pdf
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/40246286041.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_off00005fe5.bin
dffe87b1916ad85ddffdb7a5e58f32c393933cbcbcf38919edb00056d0b89df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 5376 bytes
font_01_sfnt_off00007208.bin
0d804531235dd575bd7429b4090bf00398b738640f02175aa958c37d3da9aa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7208 10264 bytes

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