Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20d7d7f195d86f1…

MALICIOUS

PDF

46.4 KB Created: 2020-08-23 16:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55d6aac26f9f3a150788555486bf8bd7 SHA-1: daabc3443c53e435b3426cb33a3f5e5100e285d1 SHA-256: d20d7d7f195d86f1ccef2525bd32ad313f66b6636906758d61007390a8ba8ca0
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for a '2019 fillable calendar template'. The presence of a link farm and the invoice lure heuristic further support the phishing or malware delivery intent. The primary malicious URL identified is https://ttraff.cc/pify?keyword=2019+fillable+calendar+template+word.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=2019+fillable+calendar+template+word
    • http://files.lulietbakery.com/uploads/1/3/2/6/132682848/611146.pdf
    • http://riwafekiz.ramblinghouseshow.com/uploads/1/3/1/4/131408027/7e17eefbd7855.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/mirrorlink_app_android_auto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/y_intercept_form_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/63872201248.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/favas.pdf
    • https://cdn.shopify.com/s/files/1/0438/4853/2128/files/14320810450.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/91943677159.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/dasogoxulatekalediwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/branch_manager_resume_format.pdf
    • https://cdn.shopify.com/s/files/1/0465/2272/8606/files/lafojosepisaxufafukiv.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_off00007731.bin
cf2b562835b3c4e565eeba7d6f745f469140ca1eb529be152c33395004c25454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 5740 bytes
font_01_sfnt_off00008aa5.bin
b8312e99f53c3b5f6b412ce7dd3bf72d33f804924fc39b8e016bb277ff81cbab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA5 10120 bytes

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