Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dac61ca015b7676…

MALICIOUS

PDF

44.7 KB Created: 2020-08-26 00:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aebd19209ace7d5b76968ac1f94e565 SHA-1: 96d00af57b676e40187ea02c697a7b9d0f0ea79c SHA-256: 8dac61ca015b7676e120922c5895652dc358ef4442ecb4b909f61eb90686a775
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=upright+citizens+brigade+comedy+impr'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify but point to potentially malicious PDF files. The document body, though heavily obfuscated, also contains the primary malicious URL. No scripts were extracted from this sample.

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.com/pify?keyword=upright+citizens+brigade+comedy+impr
    • http://waxixug.stpatsni.co.uk/uploads/1/3/1/4/131437657/kupebobotowebor.pdf
    • http://files.hamanpropertymanagement.com/uploads/1/3/1/3/131384145/1593095.pdf
    • http://files.carolynlaine.com/uploads/1/3/1/1/131164431/vopiroz_vepifigogu.pdf
    • http://files.creteartisandesign.com/uploads/1/3/1/3/131382841/bavobex_japimobenome.pdf
    • http://files.azamericansaddlebredfoundation.org/uploads/1/3/1/4/131437865/c22849b7e4a4b.pdf
    • https://cdn.shopify.com/s/files/1/0437/1916/4058/files/updated_cpr_guidelines_american_heart_association.pdf
    • https://cdn.shopify.com/s/files/1/0429/6133/8531/files/dewozivugerevufuzuzupuju.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/xoraporizipurovugejetoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/94258654413.pdf
    • https://cdn.shopify.com/s/files/1/0431/6967/7474/files/volkswagen_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/software_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/8290143896.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/downloading_whatsapp_for_blackberry.pdf
    • https://cdn.shopify.com/s/files/1/0435/8995/9839/files/wijowuxoteratotasok.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_off00006ee8.bin
67b95d808842d19903b2e008a8e6d6cb80a449f69c3627c163aa8f41e5c1abf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE8 5740 bytes
font_01_sfnt_off0000823f.bin
58291923feb7c19ca25aba9da1a1e343347c9408aaa888be82732ef115d3e834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823F 10520 bytes

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