Malicious PDF — malware analysis report

Static analysis result for SHA-256 4872ccd098edaf2f…

MALICIOUS

PDF

39.3 KB Created: 2020-08-02 15:04:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 727dd7f028792ee97b2477f3d93dbfd5 SHA-1: 114aaf6120a513449983fbd11c9cf638cc49f3e4 SHA-256: 4872ccd098edaf2f0ef12cae7d97a63e6e5437139ee0b4b1fafa7847653b17de
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to what appears to be a link farm hosted on Shopify. One critical heuristic indicates a direct link to a known malicious redirector at `https://ttraff.ru/pify?keyword=opposite+of+initialize`. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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=opposite+of+initialize
    • http://files.vapor-theory.com/uploads/1/3/1/6/131607158/gusimixe-kixifasiloj-pupofisunemez-zaxetibek.pdf
    • http://files.floridalgbtqmuseum.org/uploads/1/3/1/8/131857308/5111022.pdf
    • http://files.crypto-decrypted.com/uploads/1/3/1/4/131437689/dasijajufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/79152470539.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/10225754802.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/discord_markdown_strikethrough.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/69704313253.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
    • https://cdn.shopify.com/s/files/1/0429/5547/3059/files/22108901660.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/62095096098.pdf
    • https://cdn.shopify.com/s/files/1/0433/7749/2118/files/ritekapezate.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/46161135776.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/wopatumisuviwarivixeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/zazexirabejuzux.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_off00005c8d.bin
9e06c8f79be7f94bdd55ba23c8b7c5342efe1109786736c0b86b5d9631bc75ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D 4876 bytes
font_01_sfnt_off00006d40.bin
29f4a9d552900e35f3176b9109f656096b0845f33f6e568167556b0a7097aed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D40 10380 bytes

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