Malicious PDF — malware analysis report

Static analysis result for SHA-256 902a8d8f12d88990…

MALICIOUS

PDF

46.9 KB Created: 2020-08-31 05:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fa684f561bebcb9aeef7b02ea1f751b SHA-1: 2633050c53ecbe9aaaf4cea0d25a32461458c283 SHA-256: 902a8d8f12d88990e52d34ac44ce8419d1bd252811ff17da459e8469acfe86b0
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=deadly+dragons+skyrim', suggesting a lure to a malicious site. The presence of a 'download button' heuristic further supports the attack pattern of tricking the user into downloading something malicious. The PDF also exhibits characteristics of a link farm, potentially for SEO manipulation or distributing further malicious content.

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/wix?keyword=deadly+dragons+skyrim
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/craftsman_lt1000_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7031/files/xunizob.pdf
    • https://static.usrfiles.com/ugd/3e87bf_dce124364e66483597f1795bba482b84.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/excel_spreadsheet_budget_planner_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/3139/5493/files/80698965035.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/22720167034.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/zevodabem.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/17427898968.pdf
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/48478419153.pdf
    • https://cdn.shopify.com/s/files/1/0435/5555/3432/files/14461030657.pdf
    • https://cdn.shopify.com/s/files/1/0440/2357/8774/files/caracteres_chinos_tradicionales.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/zumewe.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_off00007950.bin
494c34a00cbfd1f0597575bea1275132185facc16e5b17bc2bb3bf368c27147d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7950 5308 bytes
font_01_sfnt_off00008b53.bin
639811b9afd0d0145b1cbbbdc7474357a6fbaf512ca7697f0237a529a8bda2ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B53 10404 bytes

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