Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7032b6caee008c…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 00:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71a125cccc708cae1a683e3211ebffde SHA-1: 3e32db9fbd9812f7bea5eb16f61f7565b4a067a1 SHA-256: af7032b6caee008ca0c2abf21dd5ebd8236de2c0fc6a736d4bcee343eca2c15d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector, ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The primary malicious URL identified is https://ttraff.com/wix?keyword=alannah+myles+black+velvet, which likely serves as the initial point of compromise. The document body contains garbled text but does include the malicious URL and several benign-looking Shopify links.

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/wix?keyword=alannah+myles+black+velvet
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/equine_acute_abdomen.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7765/files/pneumax_pneumatic_cylinder_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/word_association_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/dominion_rules.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/gifujuzumavi.pdf
    • https://static.usrfiles.com/ugd/b8c837_192c92c0d559484dac893d6c930670a3.pdf
    • https://static.usrfiles.com/ugd/238140_cf9aae890cde443fabbe9d9ed5d7ddfd.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/46283468649.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/pegoxatujuwinuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/6904337369.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/77670230944.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/rab_mens_microlight_alpine_jacket_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8685/5844/files/canon_eos_60d_utility_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/aviation_and_airport_security.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/biogeochemistry_textbook.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_off00006a55.bin
84d3b14a428d1201b863c785dc2b226a4b163e4afe7fb7c7011c7efdefd9dc48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A55 5300 bytes
font_01_sfnt_off00007c38.bin
0d14c2bd9cbbe48e806c26b312f7f588dc0c6efc337dd32d25f61fc797dc98df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C38 10004 bytes

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