Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ee6d5f6012afa7…

MALICIOUS

PDF

49.2 KB Created: 2020-08-25 11:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a74d761c6bb81a199ce886ec9cef95dd SHA-1: 5dd332831d3590a49f146848a166f42f8e0291fc SHA-256: 34ee6d5f6012afa7e713f5b0dc35f6249a3d639238dcb4b6d910deee8194ce6d
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'technical hall ticket' and embeds multiple external links. One of these links, 'https://ttraff.ru/pify?keyword=tnusrb+technical+hall+ticket', is identified as a malicious redirector. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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.ru/pify?keyword=tnusrb+technical+hall+ticket
    • http://files.unitedk-12wrestling.com/uploads/1/3/2/6/132682471/6161421.pdf
    • http://finufawog.northbridgehistoricalsociety.com/uploads/1/3/1/0/131070450/tawojerokulafi.pdf
    • http://files.willowcreekfarmsva.com/uploads/1/3/1/4/131436956/wonikodepe.pdf
    • http://files.mycbdstoreroom.com/uploads/1/3/2/6/132681910/josukufarofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/93352500408.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/vacuole_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/norubop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/pojedixipeguwaliladevop.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/42614834880.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/31703563342.pdf
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/series_and_parallel_circuits_worksheet_physics.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/27364235014.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_off000084fb.bin
5e6acab1d9fdae0a5259721ddd1bde040ac3487e558aaf0e2e467d4fa293e8da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FB 5040 bytes
font_01_sfnt_off0000960d.bin
561fc019277971d1df701d3bebb692b21278ff3b308cfc34db9d82a3bd60bbef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x960D 10076 bytes

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