Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7eda70212fc1cdd…

MALICIOUS

PDF

46.6 KB Created: 2020-08-04 01:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b494766b0878e67f62b4f06b787be561 SHA-1: 02435c3320be2e894790f3c7ffeb02339a69eab4 SHA-256: c7eda70212fc1cddae7cd97775bb3acac4bdfd54373967e042dd6efd0736b1ff
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 'https://ttraff.ru/pify?keyword=presentations+that+matter+morgan+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The presence of numerous other PDF links, flagged as a link farm, further suggests an attempt to manipulate search engine results or distribute content through a large number of seemingly benign but ultimately malicious links.

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=presentations+that+matter+morgan+pdf
    • http://files.siliconeallie.com/uploads/1/3/1/0/131070313/d67198.pdf
    • http://files.uffstreetwear.com/uploads/1/3/1/3/131380308/siposiva_lavenolofu.pdf
    • http://files.carolinewisejourney.com/uploads/1/3/2/7/132740339/kedul-vapoziwe-paxutesafu-junubajuwi.pdf
    • http://files.embracethebeauty.net/uploads/1/3/0/7/130775583/fimudile.pdf
    • http://files.tmis.us/uploads/1/3/2/6/132681409/digejowawif_julukolalilujo_vazonibego_berozevabisinar.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/81491181479.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/3364019209.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1205/files/luxunepakog.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/kajalosukiwadi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4103/files/defodamim.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/61821374670.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7263/files/91006559476.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/filadur.pdf
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/funaturatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/categories_of_computer_software_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/madijelinuvakij.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/67688779329.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdf
    • https://cdn.shopify.com/s/files/1/0435/6944/7073/files/65089377989.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075dd.bin
14e20ef8c03221bc7d67f3da7158582daef2d27d8c9eb8258f50c0b8befe0085
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DD 5424 bytes
font_01_sfnt_off00008828.bin
fe66e56989ceadf2e02a7a549c2100ca3188b07f5694f75247ff43ea3f0ffde3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8828 10800 bytes