Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea9eac1430a5e2e…

MALICIOUS

PDF

42.4 KB Created: 2020-08-03 21:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55c787e8c50b3e4c3163bf20d5aab416 SHA-1: 3edac09e3fe139e2104f8a4106fa13edbd8417fe SHA-256: 1ea9eac1430a5e2e7dd0bee038da1d0c6f47087c9a90d95031b1d2864309ffc2
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a technique often used to redirect users to malicious websites or download further malware. One of the primary links points to a known malicious redirector, ttraff.cc, which is highly suspicious. The document body itself is heavily obfuscated and contains what appears to be metadata related to its generation, but the primary malicious functionality is driven by the embedded 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.cc/pify?keyword=pathogenesis+of+atherosclerosis+pdf
    • http://files.wildchildinthetree.com/uploads/1/3/1/4/131407647/zodoxuwibin-wawuk.pdf
    • http://files.kcrkradio.com/uploads/1/3/0/7/130739415/2817781.pdf
    • http://files.shaymadden66.com/uploads/1/3/2/7/132740900/zopizudevenap-wabumifir-vefoni.pdf
    • http://files.wolfandrain.com/uploads/1/3/0/8/130874039/314396.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/nujiranojotuti.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/nelurezifujuzuje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/rerumanodubamore.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/blank_check_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/xizifefekawuvulod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/29851570933.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/hp_quick_launch.pdf
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/41355424908.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/978118298.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/vegunadisuxupudibun.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/22570805795.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_off0000686b.bin
882d1c47995c307063e78300cf72f5cb2dc13c771d6f6c8c07ca7ec33f73632a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 5420 bytes
font_01_sfnt_off00007ad6.bin
4188ddf0d68243814bf9fea7de30a0a628103f0a1216a5dc6d938bf956ee573d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD6 9928 bytes

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