Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a4b38a6294bfb7…

MALICIOUS

PDF

41.5 KB Created: 2020-08-19 14:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426e4cb7cbe9945f6fb7e4d0c9207d2d SHA-1: a9a99223dc6da55b16f246ce78559280d89eb61e SHA-256: 53a4b38a6294bfb7ec923a25a8926a3f490254cbf1c6b9a7bb86f7213fb3a81c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO poisoning. One of the embedded links, however, leads to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the text 'Loyalty program business plan template' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, and the primary malicious activity observed is the redirection to a known malicious URL.

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=loyalty+program+business+plan+template
    • http://files.melissatisonart.com/uploads/1/3/1/0/131070394/363629.pdf
    • http://bodagojon.memoryicons.net/uploads/1/3/0/8/130874666/e4e3193.pdf
    • http://files.jim-caruso.com/uploads/1/3/1/6/131607075/2579182.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6580/files/quran_surah_rahman.pdf
    • https://cdn.shopify.com/s/files/1/0428/9393/4748/files/oxidative_stress_and_diabetes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2313/files/chadariya_jeeni_re_jeeni_whatsapp_status.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/tuxavalirijolenusikakafon.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/cartoon_comedy_hd_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3469/files/tojifewa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/pilatenilu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3965/3030/files/stats_data_and_models_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/bajegalok.pdf
    • https://cdn.shopify.com/s/files/1/0432/3003/6123/files/65248864946.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/12905946890.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/40314563253.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/
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/12

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000640e.bin
4426325adae6306bc9b458ced899a177a496d645c8612600dc3222257313a0ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 5320 bytes
font_01_sfnt_off00007617.bin
f9697e9f8b5090e56867a61e5ff86bacd2bb1af1ea15c4c2c60575a43028b5f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7617 10200 bytes

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