Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3bb74ef1b36098…

MALICIOUS

PDF

163.7 KB Created: 2020-09-12 12:21:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6edec6cdd286af7f6655580926c4003f SHA-1: da971c25b9f1eeb62bf54072332f57c8b7705d59 SHA-256: 9e3bb74ef1b36098ca189ef52ac3d73129e334ad34c8d01e32e8453902bd781c
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/pify?keyword=mathswatch+answers+grade+7'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'mathswatch answers grade 7', suggesting a phishing or scam attempt. The file was generated by wkhtmltopdf, a tool often used to create PDFs from web content, which could be leveraged to disguise malicious links.

Heuristics 2

  • 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.
  • 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/pify?keyword=mathswatch+answers+grade+7
    • https://cdn.shopify.com/s/files/1/0437/6946/2935/files/the_filmmakers_handbook_epub.pdf
    • https://cdn.shopify.com/s/files/1/0440/2987/0245/files/28597633917.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/50367098701.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/45026854113.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/pocket_informant_5_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/asche_spencer_stay_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/que_es_acalasia.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/riwabotoravabemobajagered.pdf
    • https://cdn.shopify.com/s/files/1/0462/6389/4173/files/6704839663.pdf
    • https://static.usrfiles.com/ugd/6a7407_1edd9c38195c450182c7ebd4cb371706.pdf
    • https://static.usrfiles.com/ugd/dc98cc_0b3486d76e144bd3b41c441c553ef52b.pdf
    • https://static.usrfiles.com/ugd/902d29_a0f9899affa24eadbd042ecf14d8719f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002314d.bin
fd470e0e238d94afefb16530a6f47aa04632523796debb8bc2d0111542b04fc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x2314D 4976 bytes
font_01_sfnt_off0002423b.bin
20af7b83c80f4cc52bc1b3204603ed2907e07a2e8bfe7a43b8759a7f01d4dfee
pdf-font-stream PDF embedded font (sfnt) at offset 0x2423B 15776 bytes
font_02_sfnt_off00027353.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x27353 4324 bytes