Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17f0aa565203e37…

MALICIOUS

PDF

52.0 KB Created: 2020-08-10 13:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703becdbb6ffb318f98b502173caa714 SHA-1: db182ede209bfb07ff76bdb8c85665e0ea94a048 SHA-256: c17f0aa565203e37a50967cf3828a0d9d90099bef5c8e3fd6b0c2ba206ef30ad
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a bass tab PDF. The presence of numerous external links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to distribute the malicious content. The primary malicious IOC is the redirector URL.

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=californication+bass+tab+pdf
    • http://files.nagpra-unwinding.com/uploads/1/3/1/4/131407112/xaxokudo_nufuvivizeletuj_zoliwela.pdf
    • http://files.niloalcala.com/uploads/1/3/0/8/130873983/9010047.pdf
    • http://files.leedsfire.org/uploads/1/3/1/8/131856086/6480638.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/boyce_diprima_differential_equations.pdf
    • https://cdn.shopify.com/s/files/1/0435/1043/1896/files/alfabetidad_visual_arquitectura.pdf
    • https://cdn.shopify.com/s/files/1/0451/1475/3189/files/silk_alessandro_baricco_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/riwaruwawaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/36342066929.pdf
    • https://cdn.shopify.com/s/files/1/0431/7888/5280/files/zevexuvofatowebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/33786005611.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/35966035357.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/dalagopami.pdf
    • https://cdn.shopify.com/s/files/1/0438/0609/7570/files/can_you_play_vrchat_without_a_headset.pdf
    • https://cdn.shopify.com/s/files/1/0439/4234/6907/files/zaroribemekunudinopikida.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/59393436771.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/fozuresa.pdf
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/buffalo_soldier_tanya_landman.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_off0000726f.bin
fee7c7a2520c7081c358dc2a55106527b9b560c517cffa850f3dda1a88e25e85
pdf-font-stream PDF embedded font (sfnt) at offset 0x726F 4984 bytes
font_01_sfnt_off0000835a.bin
e0eceb6df3ff95b7c0aa1605ede388c587a9e41c0581a2439bf9addaed27cb22
pdf-font-stream PDF embedded font (sfnt) at offset 0x835A 15516 bytes
font_02_sfnt_off0000b388.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB388 4324 bytes