Malicious PDF — malware analysis report

Static analysis result for SHA-256 be073afc7ded2bba…

MALICIOUS

PDF

50.9 KB Created: 2020-08-10 07:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e67af1a078ea9e9c61f39cc8b3e0ceb SHA-1: ff5bced936f9cf98ecaaed8b4448729a821602b7 SHA-256: be073afc7ded2bbaae43d8a9dbe1906cc5598ee9657c320ff91f101cddd356f6
128 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 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a download button lure further supports a malicious intent to trick the user into clicking the link.

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=microsoft+azure+interview+questions+pdf
    • http://files.melissamasonphotography.com/uploads/1/3/1/6/131606174/pimefivanat-bobazalajo-wemilifes.pdf
    • http://pavinepo.nicoletteward.com/uploads/1/3/0/8/130814328/3201557.pdf
    • http://files.andimcnair.com/uploads/1/3/2/7/132740620/75542.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/befuval.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/catalyst_2960_s_switch_hardware_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0454/6691/0872/files/bsc_mlt_syllabus_ptu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/barefoot_in_the_park_full_script_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/kamupe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/33193841330.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/43695888356.pdf
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/sitawureliwibevinow.pdf
    • https://cdn.shopify.com/s/files/1/0433/8591/3500/files/sandesh_news_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/fufobalevibujawigavetaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/53645546461.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_off000085c2.bin
c2beee7de457fcad28ef5710c3580f46d1c35a5b2543eca94fb10d2eac536181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C2 5448 bytes
font_01_sfnt_off00009887.bin
5431a0c9066c6355844c205d65fec74f0d06a05ab6a254bd20e96df9d3375f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9887 11256 bytes

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