Malicious PDF — malware analysis report

Static analysis result for SHA-256 272279f6865cb7d0…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 23:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b189c3a7c21bbe925631ca285d17d214 SHA-1: dd66e815b6edc3aaa93187f2031ec959ae9f5da0 SHA-256: 272279f6865cb7d0e672e4e24b3a9322250b8e31d5352aeb482e5dc27104d1f2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'fairy tales pdf free download' and the malicious URL. This suggests a phishing or scam attempt to redirect users to potentially harmful content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=fairy+tales+pdf+free+download.

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.ru/pify?keyword=fairy+tales+pdf+free+download
    • http://files.tatcor.com/uploads/1/3/1/1/131164569/6596248.pdf
    • http://tedenom.solsticehavanese.com/uploads/1/3/1/3/131383297/kepobelemefi.pdf
    • http://files.myfantasyfootballworld.com/uploads/1/3/0/8/130814055/8d555.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/83440262491.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/mijapimivoxerunadem.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/6525352228.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/78518514929.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/80550871023.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/93711040488.pdf
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/55916665874.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3024/files/berakuwapoditurekife.pdf
    • https://cdn.shopify.com/s/files/1/0434/3450/8454/files/united_kingdom_outline_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/6441/7695/files/mnemonica_miracles.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/xiravedazamopizirudux.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/a_catholic_prayer_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/24235367576.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_off000059f1.bin
910aa39f80b739bc6eff187389584e66935a775cdf930c8eeb728c45a9bef367		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F1 5184 bytes
font_01_sfnt_off00006bc2.bin
df9b7a621d9321702b5d91cd5082c458c72f34a45aa3c8e6ebcc12163d40012b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 15460 bytes

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