Malicious PDF — malware analysis report

Static analysis result for SHA-256 9373cafd22d15a38…

MALICIOUS

PDF

46.3 KB Created: 2020-08-11 18:06:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d172d708bfa91f20d5dd3ba4bc1870f SHA-1: a64ad87c52fde38e223c42a90279171df16a7703 SHA-256: 9373cafd22d15a38f9ed248aa03593374058adbbeeb872d4225336d7aa49bb4a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=adverbs+worksheet+pdf'. This indicates the document is designed to lure users into clicking this link, likely leading to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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.com/pify?keyword=adverbs+worksheet+pdf
    • http://zikejenil.abundantlivingpsychologicalandcoachingservices.org/uploads/1/3/0/8/130873951/lawesarav.pdf
    • http://pojiv.patricialaddcaregagallery.com/uploads/1/3/2/7/132710621/wowizos.pdf
    • http://files.curranbroderick.com/uploads/1/3/1/0/131070291/dorekujomutijo_jedulaguj_soravamurijovat.pdf
    • http://zisip.pulse-studios.co.uk/uploads/1/3/1/6/131606490/3472429.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/29011817552.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/avalon_catalina_map.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/55093027625.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/taburenume.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/dovoneritiwidebamigelazel.pdf
    • https://cdn.shopify.com/s/files/1/0434/5603/7016/files/5115111328.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/suwid.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/52057220472.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/75905164962.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3359/files/psychometric_test_numerical_practice.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5738/files/joel_chadabe_electric_sound.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_off000069f9.bin
1c595b484ad1fd41dbe760aacd699ec5f62036051217950e7f581f7c508e6d78
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 4868 bytes
font_01_sfnt_off00007aa4.bin
705a1aaf6bc722d027664575873ad1e4bd0a1db07b90c783c258e56071d60444
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA4 10444 bytes
font_02_sfnt_off00009e5a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5A 4324 bytes