Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d024336ea37a98…

MALICIOUS

PDF

53.8 KB Created: 2020-08-04 21:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8abfc1f656543ac61e1eb38c0deb3933 SHA-1: 1a797292aa62c1126fd06402d0cfecd203c90093 SHA-256: f3d024336ea37a9820e7ede5ee7d6cffe3260194d6b3a871b3cbb78b6f5197e6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with at least one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=peer+assessment+in+education+pdf', suggesting a phishing or redirection attempt. The presence of a link farm further supports the malicious intent of directing users to external, potentially harmful, sites.

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=peer+assessment+in+education+pdf
    • http://files.grandaveplaza.com/uploads/1/3/1/3/131398095/zujupodo-vomasumivofagi-xonovogaf.pdf
    • http://files.karmakunst.com/uploads/1/3/1/8/131871462/73d0d679b28d.pdf
    • http://files.ginaorlando.org/uploads/1/3/0/7/130776483/70a6697cd1.pdf
    • http://files.beayogawellbeing.com/uploads/1/3/0/7/130740033/ef86a8a6f2b7.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/nugobaditaxedokufikonisi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3188/6998/files/87243966673.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/9843274580.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/trapping_rain_water_stack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/85972780092.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8831/files/buzixobisuxogaguzipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/52194084107.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/64450372689.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/xoxebopavapojavanigudite.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/the_legend_of_zelda_ocarina_of_time_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/buvadorofekiligo.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_off0000930f.bin
8990cd9403fd55e88954906e406f9dfcccdf2ff7f56654ed65254b61f4543935
pdf-font-stream PDF embedded font (sfnt) at offset 0x930F 5272 bytes
font_01_sfnt_off0000a4e7.bin
4c2561b6ff5edf17bcf15e839dc92b9abc420444578c7f1035678a265f34975b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E7 10828 bytes