Malicious PDF — malware analysis report

Static analysis result for SHA-256 91116e94f5094deb…

MALICIOUS

PDF

48.0 KB Created: 2020-08-09 13:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a579c4996471b7c7e73195ca71c50697 SHA-1: d5c9629b32aaaa21632a6abe0cf2d4bcae400e21 SHA-256: 91116e94f5094deb438d61505ccd9f91b0ce6d2e72197281392cddc64b7c0169
150 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a common technique for phishing and malware delivery. The document body, though heavily obfuscated, contains text that appears to be a lure for a job application. The embedded URL 'https://ttraff.cc/pify?keyword=a+job+application+letter+sample+pdf' is a strong indicator of malicious intent, likely leading to a phishing page or malware download. The presence of numerous other PDF links, many pointing to potentially compromised or malicious domains, further supports this assessment.

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=a+job+application+letter+sample+pdf
    • http://mebowe.30wallst.com/uploads/1/3/1/4/131453574/pamunakexemet-vamopadalabemu-zanowep.pdf
    • http://files.laurawilsonlifecoaching.com/uploads/1/3/1/3/131383775/1573593.pdf
    • http://somala.mndnorthwiltshire.org.uk/uploads/1/3/2/3/132303189/a342b34e4a051d.pdf
    • http://lakupe.moscoverse.com/uploads/1/3/0/7/130776485/xivonoxiwalemej.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/31873619294.pdf
    • https://cdn.shopify.com/s/files/1/0441/0785/8072/files/dagokivivupitemerupoxis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/bash_getopts_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/basowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/gipibujisux.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/49122217966.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/loxejadenelidusapif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuzodatusowajukekef.pdf
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/24994728561.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/25962779597.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/fetaridoraposawebojil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/budget_management_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/lomoromisaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/42691178611.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/zapavuxolen.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_off00007e55.bin
c4a4ae34960a7d0e4a562f1f61e052797c5197710ecbc3144b3d5f9154db2a1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E55 5504 bytes
font_01_sfnt_off000090f5.bin
1a92ca4d6cd78933ccdec8af1c6a5ba680ec0247b34502556115137cf4a968b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x90F5 9856 bytes