Malicious PDF — malware analysis report

Static analysis result for SHA-256 54889af7751bfcd2…

MALICIOUS

PDF

56.2 KB Created: 2020-10-30 13:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749bab99b1cee489ddc4727da9da958e SHA-1: 10d2537f0c1943bebd4e571d7f49cd064a1e78e0 SHA-256: 54889af7751bfcd2803e32727383978411eca2c9d97c5fc16ea4956f70b67cec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'drivers license utah ogden', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/123?keyword=drivers+license+utah+ogden
    • https://butiziro.weebly.com/uploads/1/3/4/3/134308177/busigijuxativa.pdf
    • https://mubopizolofovo.weebly.com/uploads/1/3/4/4/134442803/9e6757ea68aa9.pdf
    • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/3871584.pdf
    • https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/577277.pdf
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/navugewajimomo-mazaxavik.pdf
    • https://bonifivudinuf.weebly.com/uploads/1/3/4/3/134305406/lapebesizejes_wowewuga_jafolip_jepugiwir.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0482/8649/8980/files/lausd_school_calendar_2015-16.pdf
    • https://cdn.shopify.com/s/files/1/0499/1628/0990/files/67605907173.pdf
    • https://cdn.shopify.com/s/files/1/0501/2406/2908/files/clear_blue_ovulation_test_instruction_manual.pdf
    • https://cdn.shopify.com/s/files/1/0497/3166/6074/files/votanuvisemoz.pdf
    • https://cdn.shopify.com/s/files/1/0481/0073/7187/files/photo_grid_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9507/files/pitigonuw.pdf
    • https://cdn.shopify.com/s/files/1/0266/8678/3674/files/nizosulobiketu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4306/9858/files/wujusozuduromebireg.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009643.bin
f8463e9bb0f99feef548ad9560871ce9420776184ee3b941885bef5c95767d94
pdf-font-stream PDF embedded font (sfnt) at offset 0x9643 5260 bytes
font_01_sfnt_off0000a828.bin
564c16a2946f1a89ca0bc16a5d5e3214e9c20e5c790cee9cc3c0ca3557db32ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xA828 13636 bytes