Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cef02a86328ef6…

MALICIOUS

PDF

51.4 KB Created: 2020-07-25 00:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b92dc6be0d5e6612ceb30c04bfa225fa SHA-1: 71e5edf5512ac5f6996f86bf99e644014a7aaa74 SHA-256: 30cef02a86328ef62763af8ada25c416e8990033a39b33a9c56b229d0096b067
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of outbound links, likely for SEO manipulation or phishing. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text related to 'Choices game hack version for android', suggesting a lure.

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=choices+game+hack+version+for+android
    • http://files.arsalynyouthforums.org/uploads/1/3/0/8/130813837/rarenasonena_pazegoninid_polob_jufewa.pdf
    • http://files.dentacarekenosha.org/uploads/1/3/0/7/130776272/2491248d8e397.pdf
    • http://files.annasofiestensgaard.com/uploads/1/3/1/3/131380511/sikem_givofe_nipunubuxevu.pdf
    • http://files.hisheritage.net/uploads/1/3/0/8/130814408/33aaff39d9bab.pdf
    • http://files.marciaballowe.com/uploads/1/3/2/7/132712129/7575804.pdf
    • http://files.annasofiestensgaard.com/uploads
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/46112084154.pdf
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/zawalojexufovoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/59582645142.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/46723565777.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/20561283905.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/losoworijovogawima.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52945462890.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/13203943640.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/41641769967.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/61496848215.pdf
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/33729270146.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/mazosakojidizo.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_off00007613.bin
5937108666a52c61f639a9437bb17d0fd9a7576ab9790434cd95b7fa5a5695d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7613 5260 bytes
font_01_sfnt_off000087c7.bin
8b95b0e7930ac8850f05152bdfe14a6bd87f19d8a6b0897e3fd863e782d52bf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x87C7 10260 bytes
font_02_sfnt_off0000ab26.bin
2a0e0db2741371e9ed62770e079d1c3af4c642b15c78536d4995ddcc38d58e08
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB26 16144 bytes