Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cb7fb3927b3133…

MALICIOUS

PDF

38.1 KB Created: 2020-07-25 10:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7da72aecfd1132db274490abcf1a30cd SHA-1: 784989cd6cce90bfdbc962f31faacf4ddfcfb9c7 SHA-256: 59cb7fb3927b31330af3a9a76a1e652c665ea3825a4ce17d6e0a6a616ba9679c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. The primary link, 'https://ttraff.ru/pify?keyword=ami+dana+kata+pori+dj+song', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure, possibly related to the song title, intended to entice users to click the malicious links.

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=ami+dana+kata+pori+dj+song
    • http://files.indygreencongregations.org/uploads/1/3/0/9/130969160/2855870.pdf
    • http://files.sophieleblancvisualmedia.com/uploads/1/3/2/8/132814996/737ca.pdf
    • http://files.yearofdubois.org/uploads/1/3/0/9/130969543/bibololujuwes-nugeto-gikonaluwalot-fibasuru.pdf
    • http://files.yearofdubois.org/upload
    • https://cdn.shopify.com/s/files/1/0430/0872/1049/files/85221257608.pdf
    • https://cdn.shopify.com/s/files/1/0438/2900/2390/files/81549674927.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/1871681453.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/90367842849.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/vasegomapo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/vesafofamaxiliretoni.pdf
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/mazoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3890/7288/files/xisos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/97636390515.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_off000058f4.bin
bcfbf66fbb0a7ac3fe479e1a2d8f5730000582b140c39d880e6b82448c26907d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F4 5048 bytes
font_01_sfnt_off000069f9.bin
ac9ca6ef4ca261b94dec21fc4a2aba03d17776cc30f3cc9d21ea9224fc309fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 9856 bytes

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