Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c94644fc4efe2dd…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 01:38:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a0723a096641aa3eb9572feeb78894d SHA-1: 751394da41ccd042a22f824471b14d5a7519e8b7 SHA-256: 9c94644fc4efe2dd24ffd46b286fcd2f9089dbff3eb9756df323b7aecd7fd2a9
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.ru, disguised as an educational worksheet. This indicates a phishing or social engineering attempt to redirect users to malicious infrastructure.

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=earth%2527+s+changing+atmosphere+worksheet
    • http://files.nanomat-conference.com/uploads/1/3/1/4/131453194/e50ee650.pdf
    • http://files.ijbe.online/uploads/1/3/0/9/130969184/rudawowejon_jemulek.pdf
    • http://files.prideandjoymonogram.com/uploads/1/3/1/3/131379054/migatezilolawizuzen.pdf
    • http://wewavazi.meghannrader.com/uploads/1/3/1/4/131482975/747a0ebc9b.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/56356325676.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/68265010242.pdf
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/28606983057.pdf
    • https://cdn.shopify.com/s/files/1/0436/8872/2587/files/rajugogabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6731/8167/files/wow_classic_aoe_grind_spots.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/rufagixuzararak.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/97260170275.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/mikisoteside.pdf
    • https://cdn.shopify.com/s/files/1/0430/6835/8807/files/27047910789.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/83740456408.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_off000063bb.bin
0ab21f2d4a96c950de6a18cf4dc5b11bd38900ad1bd18133ef8ef69710d241d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 5460 bytes
font_01_sfnt_off00007641.bin
96a497005f6d6c428ace788224e22ab6e5a9f4859b23442a92ff78fa9c665f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7641 10120 bytes

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