Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93d102294a3ea29…

MALICIOUS

PDF

52.8 KB Created: 2020-08-30 10:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f612c364d34ea5886f789a51f686fae3 SHA-1: 226202cf57912bd54033cb948a69423052bb57df SHA-256: c93d102294a3ea2966f33ac811c139ca9720f67dfab129d2d2306fc1294142f1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body mentions 'Hollow realization dlc', likely a lure to entice users to click the malicious link. The ML classifier strongly supports the malicious verdict.

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.com/wix?keyword=hollow+realization+dlc
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/55206522781.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/62866693949.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5974/files/motenilexixepuxuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/ffxiv_throne_gem.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc9f5a679e1948a0bc660624708cd1f4.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_42dae77a6d744c64b01626f76f944089.pdf
    • https://static.usrfiles.com/ugd/e3ff21_f84952e47e574733861ed1a0160c9480.pdf
    • https://static.usrfiles.com/ugd/b8c837_522641019a894c168b977696308f1137.pdf
    • https://static.usrfiles.com/ugd/760101_e5d5688c2eb64f55aff343763a68938f.pdf
    • https://static.usrfiles.com/ugd/cb5dea_a753082923214473a6f168122e862216.pdf
    • https://static.usrfiles.com/ugd/a31856_67b92958549c4e94b0c1d7886cf06691.pdf
    • https://static.usrfiles.com/ugd/3eed2b_c901d09a966a4f7aa14b7fcccfe62942.pdf
    • https://static.usrfiles.com/ugd/b8c837_742b363a3cf94c889a975ff75f938dad.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/4240920501.pdf
    • https://cdn.shopify.com/s/files/1/0440/2751/0934/files/44319285687.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/guxis.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_off000065ef.bin
089266d3b9c6544b9ef8bcf54ca79860879be0858fe2c29a482a2203fe2e547d
pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 13544 bytes
font_01_sfnt_off00009270.bin
b3f87b65a4853ced9d0457e2ef28b3689f03a2ca4b0b756dace6777fb052dfee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9270 4856 bytes
font_02_sfnt_off0000a30f.bin
fa13b3a5db96d17133aac2611b9e891a40f02c7cf12ce9a75572b509b243454e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA30F 10204 bytes