Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd01c04ab4bface7…

MALICIOUS

PDF

100.7 KB Created: 2020-08-17 07:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9afaa8201d52cc15cf8eadfb10b5d026 SHA-1: 90685777ef869798cc3e3bd2fdcdd0ea3d299f17 SHA-256: cd01c04ab4bface7ecfd840d8eebcdf4364f3fa754d4b4c24238bc7aa0796fef
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or phishing lure. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=all+books+and+authors+2018+pdf'. While no scripts were extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content.

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=all+books+and+authors+2018+pdf
    • http://libutile.wcclightingdesigns.com/uploads/1/3/0/9/130969440/xufevip-povujekibawogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5653/files/l_imposture_bernanos.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/61874280230.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5974/files/bemba_to_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/affidavit_of_support_sample.pdf
    • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/taxonoderekumil.pdf
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/anaconda_2_movie_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/98901082050.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/47978882282.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/96568198409.pdf
    • https://cdn.shopify.com/s/files/1/0438/7504/1435/files/27903712535.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_off0000d57f.bin
a554b7a82233bde596b7c8f1040e8d6205dbe50511884802147b37804a9018e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 38656 bytes
font_01_sfnt_off00014dac.bin
569997d2232e27d8b2550b6af402bb7cae2f94e067c4af2f6d1260995bd8f826		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DAC 5844 bytes
font_02_sfnt_off0001617d.bin
465932eea13fb1ded59b6ccb14784cf7f86d142ec6a00320649b340356fe7332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1617D 10588 bytes

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