Malicious PDF — malware analysis report

Static analysis result for SHA-256 bada41cd1ca4384d…

MALICIOUS

PDF

127.6 KB Created: 2020-08-10 20:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9102783d7493791327569576235e22b1 SHA-1: 6c7a81ee33f99c09cf0e5f923eea546c0bacce49 SHA-256: bada41cd1ca4384df8da77512bd3c7c28bed8a53bd036d7af9e37ea335c2940e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=african+union+challenges+pdf'. Additionally, it exhibits a PDF link farm behavior, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site.

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=african+union+challenges+pdf
    • http://files.chathamhighlandsna.com/uploads/1/3/0/7/130739704/78849.pdf
    • http://nunev.180degreefinancialcoaching.com/uploads/1/3/1/3/131380600/8584392.pdf
    • http://files.davidheinick.com/uploads/1/3/1/3/131379049/lotezubo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/vevifojuwifixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8920/6174/files/jubebixojufude.pdf
    • https://cdn.shopify.com/s/files/1/0437/0736/7592/files/12171476599.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/nebenuxisamuwinomomoburiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/gatozukow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/sofumuxeve.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/fodoruzagebo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/honda_70_dirt_bike.pdf
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/bihar_map_blank.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/72668185325.pdf
    • https://cdn.shopify.com/s/files/1/0447/2664/8985/files/reiki_2_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001d740.bin
8061aeb56028e3a893c209bb897c9dc75c456178181c2b1c8cb84dbb49800774		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D740 17420 bytes
font_00_sfnt_off0001920e.bin
10728428d326f4d3c0358744389c73c1f7c05a92b1f14b9466dda5d3a589aa56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1920E 5408 bytes
font_01_sfnt_off0001a466.bin
5e6c98348c4f33f3b6f70407c5faa02eca6e1c067a8441bc6048e4cb7be6933b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A466 16544 bytes

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