Malicious PDF — malware analysis report

Static analysis result for SHA-256 7570c54cfa1409c6…

MALICIOUS

PDF

36.3 KB Created: 2020-08-17 01:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3f19017b408dc4e393a03608ff2f005 SHA-1: 230d9edcf36801e1e2d30db8de2facd02e47fb61 SHA-256: 7570c54cfa1409c63f7eae9bba765442edb31f5e634f63fe23bb99044f9dd87f
68 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL and appears to be a lure for a calendar download. The presence of a visual download button further supports the social engineering aspect of this attack. The primary IOC is the malicious redirector URL.

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.
  • 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=malayala+manorama+calendar+may+2019+pdf
    • http://files.fly-by-day.com/uploads/1/3/1/0/131071067/figiruzusebeku.pdf
    • http://sefovefu.bostonbollywood.com/uploads/1/3/1/6/131606289/degovurak.pdf
    • https://cdn.shopify.com/s/files/1/0432/7017/6932/files/titaxisiboledi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/35569056196.pdf
    • https://cdn.shopify.com/s/files/1/0435/6145/1681/files/21280903179.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/33129010261.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/aiag_spc_reference_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/pizosegulibofixi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/biblia_romana_ortodoxa.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_off00004ee4.bin
c4ed6209a53da0936bbc0217ef507815090efb5dc06c7f2a01bf5db0137abe36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE4 5712 bytes
font_01_sfnt_off00006252.bin
8db56aac3af2d04d692801b21507aabacd1241d220959a8d40de72f445bb9f13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 9980 bytes

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