Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3b42a15f0f15c3…

MALICIOUS

PDF

38.2 KB Created: 2020-08-02 02:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a39a5868bbf589d2c2ebc2ec6fa82ff7 SHA-1: c3fd171a65083482e9605f89faadab305a6e6a75 SHA-256: dc3b42a15f0f15c3cf0174a8b267a6611592c4469d9552111db1696d0ab61b6a
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting urgency, such as 'account will be terminated' and 'action required within 24 hours'. This indicates a phishing or social engineering attempt to trick the user into clicking the malicious link, which then likely leads to further malicious content or malware download.

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=lee+reloading+manual
    • http://files.en.mattarelloaway.com/uploads/1/3/2/3/132302876/260120.pdf
    • http://files.vanesanieri.com/uploads/1/3/1/3/131378921/b3615de15.pdf
    • http://files.dejohnsonauthor.com/uploads/1/3/2/6/132682685/35d6acc.pdf
    • http://files.solacedominic.org/uploads/1/3/1/6/131606965/konisetoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73930450062.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/25090841351.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/90207349370.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/limulobiwulalisevub.pdf
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/tidewuzobavadedurozud.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/68910792249.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/28912062584.pdf
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/metefegelis.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/zubugemubupafugeru.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_off0000585f.bin
246df6681b5faab8ba16e2920f4283053b4bba2eae11efde20c1c39b0c9e8bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x585F 4908 bytes
font_01_sfnt_off000068fe.bin
e8d710ab674c4d48b8572646562aeb8ebddfff6b7fc96d575ce48eb5952e4f41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68FE 10408 bytes

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