Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cce6786803e188d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 03:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6556d28afc75ec5f4130d44e00012f27 SHA-1: 2508806cde69694884fb131e94a9192ebb28bac9 SHA-256: 1cce6786803e188d34392ce1b40e816f42dbbc737efd16bfd0272e9868b325a0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The presence of the 'apraxia types pdf' keyword in the redirector URL indicates a potential lure to disguise the malicious intent. No scripts were extracted, and the document body was heavily obfuscated.

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=apraxia+types+pdf
    • http://files.thegardensatsancarlos.com/uploads/1/3/1/4/131409557/23222.pdf
    • http://files.theparishcup.com/uploads/1/3/0/8/130814393/c7003e4b79223.pdf
    • http://jumiwix.adrienneleigh.com/uploads/1/3/1/4/131452883/berikejawapikokex.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/zesimikominoke.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/72186562399.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/gidebitodavoxiwes.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/68983734785.pdf
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/office_2013_portable.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/14400778806.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/27212372149.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/class_javalaunchhelper_is_implemented_in_both.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/deminumezebewigibisu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/3471-_10000_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4135/7973/files/bopewotisovaf.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_off0000741d.bin
252ad33307059360d598b3dadb8f3684664c0a7e5381dd5cbe48778a6d616779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 5164 bytes
font_01_sfnt_off000085ca.bin
21e1242d13c153966622c1787a8ac7a7b30de4d8e21f96d4e0d55f4911e781c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CA 9724 bytes

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