Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc74d1821eaa0638…

MALICIOUS

PDF

41.8 KB Created: 2020-08-26 03:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8389e24070f207dbe3ee78f17b3f6b1 SHA-1: fa80b736a2d1947793a25a85d8b720b6b912008a SHA-256: dc74d1821eaa06389a09d23e716a19aa4c9e90807089d5a0d6923db75e52ccf1
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body contains obfuscated text and embedded URLs, reinforcing the malicious nature of the document.

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=necklace+of+fireballs+5e
    • http://files.explorecalco.com/uploads/1/3/2/6/132682585/41377.pdf
    • http://files.buytriadnc.com/uploads/1/3/0/9/130969710/lokuzo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/90857884019.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/23233116183.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/cv_template_gratis_word.pdf
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/xakubefep.pdf
    • https://cdn.shopify.com/s/files/1/0436/1846/7997/files/xijiguvepivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/40226684415.pdf
    • https://cdn.shopify.com/s/files/1/0433/7896/6686/files/golang_delete_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/69969978087.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/ados_2_module_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/31061036090.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_off000064a7.bin
e475c3373ea57ba51d2f82645e1503101137a8b631034125d0072f30519fb568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 5172 bytes
font_01_sfnt_off00007651.bin
6e7fe2b470545ae9be4b73e63baac9ead4739ba7cc20032f79494001ac1b12c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 10680 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.