Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4ce7ddf9010297…

MALICIOUS

PDF

40.8 KB Created: 2020-08-02 00:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb7814c42f686fb4f27ba2343172adc6 SHA-1: 5fe140b88ddb9202533a7b223f7022cc3b69efba SHA-256: 3e4ce7ddf9010297a8421b22720abab6342faf655cd3298bbd80995abd3ee362
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=waves+mercury+crack'. This indicates the document is designed to lure users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a fake software crack lure leading to a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=waves+mercury+crack
    • http://files.pearlhenryboutique.com/uploads/1/3/1/4/131453904/3011523.pdf
    • http://files.herothrillshow.org/uploads/1/3/1/4/131452750/9817073.pdf
    • http://files.thighsofsteel.com/uploads/1/3/0/7/130776619/2571fe5b2d91e3.pdf
    • http://files.trade-city-award.org/uploads/1/3/2/6/132695280/92b29c55e9bc.pdf
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/pametawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/74365955051.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/16577678472.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/varudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8970/files/81882488109.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/36197540675.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/lyman_reloading_manual_50th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/bafelabonotepuralosuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/65651667208.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/64381529444.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/62011190697.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_off00006275.bin
777841e8e9b1697f267a7b0200fb6b8647fb979b15a1543ada46ec01aabd4d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6275 5152 bytes
font_01_sfnt_off00007400.bin
491b4684d3c1bf2d7767434281a0288dd9a10bc6be0c9de1ad160fefe428a159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 10108 bytes

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