Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7de268d8ae24057…

MALICIOUS

PDF

39.9 KB Created: 2020-08-20 04:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50d9cf59a446ca4500c2518129a5bfba SHA-1: 67a175477633799328b3ee074c0c831a5fe7f04a SHA-256: c7de268d8ae24057a9e0210ba4c2f189123844a6e0edd7361a651d0f471cab0c
128 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The primary attack pattern involves redirecting the user to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=when+will+acura+rdx+have+android+auto
    • http://files.apurdylab.org/uploads/1/3/1/6/131606490/wosib_fanowifebujaju_befojanikupuvuf_nofinuzivelatek.pdf
    • http://pufare.wall-in.com/uploads/1/3/2/6/132696067/guwidotajagipigadi.pdf
    • http://files.custombuildersmn.com/uploads/1/3/0/7/130775747/ca768f9a9492bc4.pdf
    • http://kekas.meredithglisson.com/uploads/1/3/1/4/131453060/jinemutu.pdf
    • http://files.100wwclickingcounty.org/uploads/1/3/1/3/131378780/3a290e3e653ef.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/78136760919.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/85021777384.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/cdr_to_pdf_online_converter_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/wutitujanaleritosoxeko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1885060089.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1421/files/mokatevebefawiwipima.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/14525783740.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/68279555900.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/free_enchanted_forest_wedding_invitation_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/half_elf_d_d.pdf
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/ahu_commissioning_report_format.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_off00005c7e.bin
5f9bd2e4e2ec0d8786271ccfbc31f5dd78e0cfdd99d34e7725fd7e07d6b31bff
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7E 5080 bytes
font_01_sfnt_off00006dd4.bin
ef1b12cc536ae60471700fd6c62ec568fdc4168c6a8d0ce299873bc2c782bb6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD4 10268 bytes