Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a89ed3d49e0fa0…

MALICIOUS

PDF

46.1 KB Created: 2020-08-15 03:37:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b3926a2d9b75b8f188f69b90bc5b31 SHA-1: 5c8c43e314e053de7dde53a191fe813d8e55b166 SHA-256: c2a89ed3d49e0fa0a5c0d6201a23dc973f379ff81e2b5139c1505b5fda0e3e3e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=best+free+android+app++sites'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The file also contains a large number of embedded links, many of which point to external PDF files, indicating a link farm strategy. The primary malicious IOC is the redirector URL, which is likely the initial stage of a phishing or malware delivery chain.

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=best+free+android+app++sites
    • http://xotewekof.toejar.com/uploads/1/3/1/4/131454012/2361025.pdf
    • http://dubokirat.andymacdonaldmusic.com/uploads/1/3/0/8/130813979/fosujam.pdf
    • http://files.thespirallife.com/uploads/1/3/1/4/131454620/8295963.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/92998765235.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/fowomik.pdf
    • https://cdn.shopify.com/s/files/1/0439/0813/7128/files/aines_selectivos_cox_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/91734199202.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/labuwonav.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/76709260252.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0430/5325/2757/files/46206782710.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/25300324432.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_off000076c9.bin
a04b7a7181a1749480e6a5f1d24ad55217e181177268dedd5225b1371038f888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C9 5052 bytes
font_01_sfnt_off00008808.bin
2bad93ed7d12d3766363f535659e3f136e0a95146d9a6747988ae8e76bbf6402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8808 10580 bytes

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