Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2af9de113c8092d…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 14:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d446a29a15f1e86f80630e82e2e2830 SHA-1: f8cec6fc33665fb97abf27ac3c31989ba2d8bb39 SHA-256: f2af9de113c8092d5a4e0d710c4382607e1a1dfdf3f2c01f98f1ac5da38951ad
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body contains text suggesting a lure to download something, and a heuristic indicates it instructs the user to copy/paste content into a shell, likely to execute a payload. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.cc/pify?keyword=google+chrome+ubuntu+14
    • http://files.obsidianmals.com/uploads/1/3/1/4/131437018/tikawipaf_mutomego_gerajugebun_nusufijaxusorof.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/ordinal_numbers_practice.pdf
    • https://cdn.shopify.com/s/files/1/0433/0618/8955/files/minecraft_pocket_edition_0._15_0_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/avid_virtual_instruments.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/codex_adeptus_mechanicus_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0446/1186/2691/files/62339082455.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/android_9_encryption_samsung.pdf
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/40958091195.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/webefelamezuluv.pdf
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/boosting_self_esteem_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/pv_manufacturing_technology_quarterly_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/4833027146.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/80485037804.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_off00005f4f.bin
23e5b9d78be70af1c2acf1772654fdad98a88d156b794103d2928b87bf984ba3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4F 4968 bytes
font_01_sfnt_off0000701f.bin
a8f1867cb65b42c6b1227fa208c3a086458ebf0d75ff644f57b49bc68842abe8
pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 9792 bytes
font_02_sfnt_off00009191.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 4324 bytes