Malicious PDF — malware analysis report

Static analysis result for SHA-256 2861aaec68d7787a…

MALICIOUS

PDF

64.3 KB Created: 2020-08-21 11:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b241228d4e31947a1881fd94b8a44d2a SHA-1: 7412bc42c092e8697b107a7bdd1c341fb6c43c3c SHA-256: 2861aaec68d7787a916c8bf1927ff074ccd743f94c86ce8de412b8cd6633de01
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, embedding numerous external links, one of which is a known malicious redirector. The document body, though partially corrupted, contains text related to concussion management and includes the malicious URL, suggesting a lure to a phishing or malware distribution site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=concussion+recognition+management+guidelines+for+parents
    • http://woborudeb.shivagallery.ca/uploads/1/3/0/7/130739783/lorojapewuvoje-kixiwomivirod-wivefowigiji-kezob.pdf
    • http://vitasiku.capecodspeechlanguagepathologists.com/uploads/1/3/0/7/130776647/tesiwamewevajoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/1503136492.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/bonolone.pdf
    • https://cdn.shopify.com/s/files/1/0436/8554/4089/files/21322685762.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/28449786220.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/90937017891.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/the_last_flight_of_noah_s_ark.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/79751924380.pdf
    • https://cdn.shopify.com/s/files/1/0440/1519/0181/files/puzuzowubupame.pdf
    • https://cdn.shopify.com/s/files/1/0451/0393/9737/files/tisug.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/69808509686.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_off0000b975.bin
8871ed95b542f8164b56ceffb741988e337a9200b94f7f7a3e02b06085eadd40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB975 5380 bytes
font_01_sfnt_off0000cb9d.bin
9d46d0307efc86e8f0c7f6c1085ab95ad1bf648f52b02482341ac07d511b6c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9D 12164 bytes

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