Malicious PDF — malware analysis report

Static analysis result for SHA-256 242a6162e741cd7a…

MALICIOUS

PDF

40.8 KB Created: 2020-08-29 05:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82f522aa41eb66002586684d935ee9a2 SHA-1: ca1e3a6286f32a4609e6b96cba1ddc193cf60916 SHA-256: 242a6162e741cd7afa9d95b68264d936bcff4153565a5be1473d22b30fd1034c
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'jarvis health assessment lab manual'. The primary malicious IOC is the redirector URL, which is likely used to host further malicious content or phishing pages.

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.me/wix?keyword=jarvis+health+assessment+lab+manual
    • https://cdn.shopify.com/s/files/1/0434/5643/0230/files/ackermans_van_haaren_annual_report_2016.pdf
    • https://cdn.shopify.com/s/files/1/0439/3412/2139/files/napefodajologujones.pdf
    • https://cdn.shopify.com/s/files/1/0451/9460/8789/files/lezimisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3166/files/54149442203.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/acronis_true_image_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/car_accident_report_in_abu_dhabi.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ad0a2968214d07a38c615ad713f612.pdf
    • https://static.usrfiles.com/ugd/b8c837_efe7fd7edecb46119dbcfbc70dfc82b9.pdf
    • https://cdn.shopify.com/s/files/1/0437/0179/7019/files/libro_del_caballo_de_troya_1.pdf
    • https://cdn.shopify.com/s/files/1/0444/3347/3703/files/48138894361.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_off00006143.bin
8be44ea71a6e939212f7b63eb3a6ec1216a672d48102bf7f7240fe2a21323dfb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 5116 bytes
font_01_sfnt_off00007282.bin
591a44d95f9beab82c38cba1b3cf493cb2bdb260e2e992af8ba90bd8df633d10
pdf-font-stream PDF embedded font (sfnt) at offset 0x7282 10800 bytes