Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cf8d2b9ef63084…

MALICIOUS

PDF

46.2 KB Created: 2020-08-25 06:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04b59f26c32df6dadeb7ccc7b77742f6 SHA-1: 709fbe7d1b518f1854bdad462eb9eee4cbd89930 SHA-256: c8cf8d2b9ef630845c7c647c57cda4666ddc677976dd2f59d1c7868903bfc9e2
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or social engineering attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=frostpunk+quick+start+guide, which likely leads to further malicious content. The document body, though heavily obfuscated, contains references to the lure and the malicious URL.

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=frostpunk+quick+start+guide
    • http://sukitid.rhapsodyartbarn.com/uploads/1/3/1/8/131857631/deparafinewevifef.pdf
    • http://buzumu.mistergteacher.com/uploads/1/3/2/6/132682663/1269450.pdf
    • http://files.jerkoffbbq.com/uploads/1/3/1/4/131454355/xikim-ferijoj.pdf
    • http://zejoropo.louisetanguayphotographe.com/uploads/1/3/1/4/131409090/4210842.pdf
    • http://lodipava.breezecounseling.com/uploads/1/3/1/4/131437254/namawezipejewer_dukedafebowipa_duvibom_gobifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/jimogisododeke.pdf
    • https://cdn.shopify.com/s/files/1/0436/3455/7088/files/90852825564.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/livapolegejopexugug.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/87383514051.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/1366931903.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/gikigejewabegowizumoxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/53103596805.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesuwalaloluxafim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006794.bin
9e143f841038e086d9f3ca5273d01e9240ade5bc8c6cf6e9471960bef56585f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 5236 bytes
font_01_sfnt_off0000796d.bin
8507d7041622f7391c11804ef598aece548a10a5bb101e3a5d8abd63ed9d9cdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 11096 bytes
font_02_sfnt_off00009e3b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3B 4324 bytes

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