Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3727d96ec8c72d1…

MALICIOUS

PDF

49.1 KB Created: 2020-07-31 18:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab89091f8b740212702cde42f79229a0 SHA-1: 26691e6bf4df5c8fed67a977c3bddb476c8aa658 SHA-256: a3727d96ec8c72d103d207418a00536ec3a0ac134e046efd8db8a681f9fb0de9
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to improve search engine rankings for malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=gta+v+cracked', is identified as a malicious redirector, indicating an attempt to lead the user to harmful content, likely a scam or malware download. The document body also contains the URL 'https://ttraff.ru/pify?keyword=gta+v+cracked', reinforcing the malicious intent.

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=gta+v+cracked
    • http://files.greensborolactation.com/uploads/1/3/1/8/131858287/jebogaf_bigewod_wimuxofofudibat_pedenekidoxuto.pdf
    • http://files.kelleycarney.com/uploads/1/3/2/8/132814024/1911118.pdf
    • http://files.runnorthville.com/uploads/1/3/1/3/131381804/kiwilubuvuferaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/5730/8063/files/kobedimagegaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/lupukaviwifajoniganigezid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/50184521860.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/bidikizapam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93366398369.pdf
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/92267010684.pdf
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/48125182150.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/misuzimojujanadijoremo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4985/1811/files/refizevo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000617b.bin
44d44392bb04a8afdf2b52b97ef4fa42cc9cf7157d3d7b19c85d8932ed4e5c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 4400 bytes
font_01_sfnt_off0000708a.bin
8c4d06f1b682546705a295d03e864d75cdaf4588b08a02262a26ce666bfa7088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 10352 bytes
font_02_sfnt_off00009430.bin
11d1c74232de0289eac8027feb90e43df615f8ede1d134055d435ff03912c352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9430 16164 bytes
font_03_sfnt_off0000a93a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA93A 4324 bytes

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