Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5d4b41c58a9a2e…

MALICIOUS

PDF

50.3 KB Created: 2020-08-16 19:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d8a26843a123d9ac80aab3e40875412 SHA-1: 6c5e8104d77b95f709f19d5e35bc1808e5e3e5b0 SHA-256: 8e5d4b41c58a9a2e60fc27547b4ad9d11d41b397feecd6d2e042831faccb6045
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, ttraff.com, which is likely used for phishing or malware distribution. The document body and embedded links suggest a lure related to cracked software, aiming to trick users into visiting the malicious site. The presence of numerous external PDF links further indicates a link farm or SEO poisoning tactic to increase visibility.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=adobe+indesign+cs6+full+crack+sinhvienit
    • http://files.jjfdirect.com/uploads/1/3/1/1/131164112/98a1cbed.pdf
    • https://cdn.shopify.com/s/files/1/0431/8304/6813/files/90118485891.pdf
    • https://cdn.shopify.com/s/files/1/0438/5567/5542/files/jigizamug.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/xojiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/75411562569.pdf
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/80913937399.pdf
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/statistical_function_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/koxegifudesivuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6578/files/count_number_of_days.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/74549268945.pdf
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/pivawuxedulumosuxul.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000518b.bin
40e0ad21b19df3db216fd06b1281b08faf1616a5a4e0e4362360d049e0fe8d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x518B 6832 bytes
font_01_sfnt_off000062da.bin
a1e3503d1050ee7f96f0b2b34c9ed92ac65833541f87ccc9b4cfc235f678943e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 5572 bytes
font_02_sfnt_off000075c4.bin
62b278d4e53e07c4a52da1147f5d3494a709666a31ae96c6389ca8b3e9f50ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C4 10136 bytes
font_03_sfnt_off00009842.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9842 16204 bytes
font_04_sfnt_off0000ad70.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD70 4324 bytes

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