Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba2861fe6afe3b9…

MALICIOUS

PDF

41.4 KB Created: 2020-08-08 11:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9743f1abd273ef735941ca26342092f SHA-1: 012a77fa28b36c0cfd59c64d2b398e69eb4468e2 SHA-256: 2ba2861fe6afe3b97e60f3d13e5c196568cdff1228de78783e5b9c0d653eb39c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=biblia+szatana+pdf+pobierz'. Additionally, the document exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The presence of a redirector suggests an attempt to lead the user to a malicious site or download. No scripts were extracted from this sample.

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.cc/pify?keyword=biblia+szatana+pdf+pobierz
    • http://wolen.sarahjeanhorwitz.com/uploads/1/3/0/7/130775732/2509867.pdf
    • http://rexadi.illawarraholter.com/uploads/1/3/1/4/131407406/8531012.pdf
    • http://sunev.craftyphoenixscabin.co.uk/uploads/1/3/1/6/131607062/525f4.pdf
    • http://files.newhopemyanmar.org/uploads/1/3/0/9/130969477/felaw.pdf
    • http://files.theapplemechanic.com/uploads/1/3/0/7/130775819/1359648.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/wiragazirugitinuriwuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/11199966534.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/26339087533.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/cassation_decision_volume_4_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0443/0761/1804/files/disturbed_sounds_of_silence_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/abortion_essay.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/math_worksheets_first_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/24514329597.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/xeparinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/dakanumoxeriwikake.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/bunigoritoxaboxasulopu.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_off000060c5.bin
35f424b6ab8c142105fe8231e87ba5960e9656de93e37a3e2a3023f13634562c
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C5 5272 bytes
font_01_sfnt_off000072c8.bin
615573c05039659c447f6d123c21488d2b944395d5bab4075260579650bc0cdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C8 11608 bytes