Malicious PDF — malware analysis report

Static analysis result for SHA-256 debec3669a852f26…

MALICIOUS

PDF

49.2 KB Created: 2020-09-19 08:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4024d7b3d5a7858eceb1590f0b7f3dd2 SHA-1: f38eab526c128c2b355c8daac255e8094845a052 SHA-256: debec3669a852f26ff3040f8f4790c7cf344bd92e0a96eddf3a0f8d655695fcf
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is designed to lure users into clicking through to further malicious content. The document also features a link farm of numerous PDFs hosted on various domains, suggesting an attempt to manipulate search engine results or distribute content broadly. The presence of a 'download' call-to-action further supports a malicious intent to drive user interaction with the malicious links.

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.club/wix?keyword=dual+sheath+redux+shield+on+back+not+working
    • http://files.coloradoaps.com/uploads/1/3/0/7/130740249/165141.pdf
    • http://lokifujup.wildchildfibers.com/uploads/1/3/0/8/130874478/2777005.pdf
    • http://files.perrycountyanimalrescue.org/uploads/1/3/2/6/132681456/e88b2.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1989/files/sonetibomupufoluzutifovo.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/keynote_template_smile_design.pdf
    • https://cdn.shopify.com/s/files/1/0437/1870/5306/files/dispute_a_parking_ticket_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/wititaxo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/how_to_reset_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/gugegezunegaduditoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/php_bangla_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/90744769809.pdf
    • https://cdn.shopify.com/s/files/1/0483/6212/7509/files/jipisatawajexedavusubor.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_off0000810c.bin
83400bfe4403f3542989206af93322c5adda46fbfc812959a38f5de08df83761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x810C 5564 bytes
font_01_sfnt_off0000940d.bin
58c81c852a5b06cc8958c69991fac816ef9e46925f39840064960dbc91bc6ac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940D 10524 bytes

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