Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9366ce45e07f73…

MALICIOUS

PDF

45.8 KB Created: 2020-08-24 16:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c947fb3702a27f8e6b4629c00f526a50 SHA-1: 4676cca2162ea154ab6f0b5f9f05c24163608ea6 SHA-256: 1a9366ce45e07f73d8376e865d8cd4fc202b361e84e463357c813d67e385296b
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a redirector to malicious infrastructure, indicating a phishing or scam attempt. The presence of a 'download button' lure and a keyword-relevant title in the document body further supports this. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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.cc/pify?keyword=cycle+race+game+free++for+pc
    • http://files.forevertyler.com/uploads/1/3/1/0/131070911/afece9dd3.pdf
    • http://fezopa.grandhavenbucsfootball.com/uploads/1/3/1/4/131406717/maguja-jexutavedubina-jetotu.pdf
    • http://files.americalibertyforum.com/uploads/1/3/1/3/131398333/5103526.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/leather_jacket_sleeve_length_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/dudilule.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/gmat_sample_test_papers.pdf
    • https://cdn.shopify.com/s/files/1/0437/2096/6293/files/mixumiduw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/altruistic_punishment_in_humans.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/51795239429.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/59789333383.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/safevogav.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/abnormal_psychology_16th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/jidenezexozazovemixidepi.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_off000076bd.bin
2408bc202dc6e1c16b02cd854156262fb57be9b2403d4c02a98f31692a0e57de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 5164 bytes
font_01_sfnt_off00008840.bin
95ba011ca05d036cc06f62e1df1ac860cc53e3c87198ec8d6542289d91f7de9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8840 10032 bytes

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