Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ac39638951c7d7…

MALICIOUS

PDF

39.0 KB Created: 2020-09-09 11:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd5cc077ff949ed4330ab35b0bed9541 SHA-1: 4c11f5f8cb0bc02899b48a5b7f6375cb4cc29a69 SHA-256: a7ac39638951c7d7a3956088cb86a228758108af087bf50dd6dfbdaf6495c780
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/wix?keyword=reading+plus+answers+level+i+environmental+disasters', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to a malicious site.

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.link/wix?keyword=reading+plus+answers+level+i+environmental+disasters
    • https://cdn.shopify.com/s/files/1/0438/4908/9186/files/pubalukufasarige.pdf
    • https://cdn.shopify.com/s/files/1/0431/4726/4166/files/manualidades_navideas_2018_con_reciclaje.pdf
    • https://cdn.shopify.com/s/files/1/0462/4354/5237/files/wudusugufozuduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/fewoweturoxomewedulup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/vejawotubasek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/jarepixobatezuxorujalel.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/gcuf_supply_date_sheet_2019.pdf
    • https://cdn.shopify.com/s/files/1/0462/3545/1543/files/disif.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/pifuzogunekojaboxakew.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/pimirujewito.pdf
    • https://cdn.shopify.com/s/files/1/0466/3033/8725/files/anecdotal_observation_format.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_off00005af2.bin
64c73ee71ee3e0e2653dc09e050920cb73619f50eac8bea3f774d2cdb545ba61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF2 5440 bytes
font_01_sfnt_off00006d7d.bin
e940199e7adeb90d62dc6b77fbe5cb91d364626c2bd2394254477d4e876e6c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 9844 bytes

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