Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6ebb21d90567bd…

MALICIOUS

PDF

44.0 KB Created: 2020-08-23 16:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98ad158bfe9cfef74d7327be8f07b844 SHA-1: 92fce25324cc43fd04d84b56ae25995df77121c4 SHA-256: ea6ebb21d90567bd542c148d1ab75b2913b46551edf6e5f7e01083f2d4884f9c
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=emulator+android+ringan+terbaru'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is likely intended to redirect the user to a phishing or malware distribution site.

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=emulator+android+ringan+terbaru
    • http://files.myflamingheart.com/uploads/1/3/1/4/131453048/a3b11180267.pdf
    • http://lutinu.figfleurs.com/uploads/1/3/1/8/131856281/6bc0122257.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/49471162410.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/ielts_writing_ngoc_bach.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/85178452239.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/bufewara.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/84561256565.pdf
    • https://cdn.shopify.com/s/files/1/0433/8873/1546/files/wow_classic_1._12._1.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/kulizolugiwixurozagogu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8218/5893/files/comment_faire_une_bibliographie_d_un_document.pdf
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/tizivapimajekalipipidibid.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/dodonojonedak.pdf
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/josikenowozin.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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e1.bin
550312c889f6f9033dc5204faf2ace1ca9e8ec1a8f69acceb0127f7dd87c8052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 4948 bytes
font_01_sfnt_off00007190.bin
ef87d07411c431f476fed6ffd2b9aaeb2c323f663b6b9b9861ae48e32378ffe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7190 10276 bytes
font_02_sfnt_off000094c0.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C0 4324 bytes

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