Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3dbb7d0a16babc9…

MALICIOUS

PDF

38.6 KB Created: 2020-09-21 20:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae91b3013c16dcc5f7ba1a51d710c4d1 SHA-1: b9f42dc853626fce95eb5d6ece4155d1c648e31f SHA-256: a3dbb7d0a16babc93ee22f06b7eaccf2e2e41083f9b30e0467b1e4659f0b191a
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with 14 identified as part of a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.me/wix?keyword=dragons+clan+logo, is flagged as a known malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to manipulate search engine rankings or distribute malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=dragons+clan+logo
    • http://bujowom.mayfieldcommunityleague.com/uploads/1/3/1/0/131069987/tazejekunab.pdf
    • http://files.conleyxc.org/uploads/1/3/0/8/130874266/jovaxusotuwiloxig.pdf
    • https://cdn.shopify.com/s/files/1/0428/5356/4583/files/paris_city_guide_lonely_planet_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2545/7575/files/5026782098.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/63518385745.pdf
    • https://cdn.shopify.com/s/files/1/0434/8713/3860/files/69450540682.pdf
    • https://cdn.shopify.com/s/files/1/0449/0140/0731/files/archipelagic_doctrine_philippines.pdf
    • https://3b560fce-ee03-447a-92bb-f02e74bdce16.filesusr.com/ugd/a421e3_c09398ace92f463b8dfa02132c9a19f6.pdf?index=true
    • https://d18060f3-ad7c-4773-96ac-0fe8c9cb5d29.filesusr.com/ugd/5a1791_dc516f760ce94759b4b877c4bc807dfa.pdf?index=true
    • https://89f28b49-61e5-4370-8056-e2a91725c761.filesusr.com/ugd/d2057d_b623b4384b95444793e4e36a5924b5b3.pdf?index=true
    • https://9bbb9bb9-ee93-4f01-b736-6fd17a809005.filesusr.com/ugd/74a852_cf515417400d44669c9b51e2b8f70343.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/82607603614.pdf
    • https://cdn.shopify.com/s/files/1/0437/1067/7141/files/hillsville_elementary_school_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/bitisuwofe.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_off00005a90.bin
8ae6ca4f4a01155afd0eb2f20dc1ee6b67b9183ea45e14a3bc0868ac39b94204
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 4968 bytes
font_01_sfnt_off00006b8c.bin
e7569c98f9efa265f7c0d1a561fd8158fa5314646976def84ef9a953f78dd678
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8C 10100 bytes