Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f49e8caedad7bc…

MALICIOUS

PDF

41.4 KB Created: 2020-08-20 02:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6793dc567e5f7b1ea62d4fc6ecc1254b SHA-1: 44ae2d6982d13e60bc9deabb86a9652a2921bc4f SHA-256: b6f49e8caedad7bc4bb92886d24fa48faa59bcd10531a07f9b813145a8a3fbb9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=calendar+template+with+week+numbers+2019'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.
  • 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.
  • 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=calendar+template+with+week+numbers+2019
    • http://files.handynola.com/uploads/1/3/2/7/132711966/2f017b277.pdf
    • http://zigaz.reedhospitalityassetmgt.com/uploads/1/3/1/0/131070364/7844d821be64.pdf
    • http://tajewed.macabrecinema.com/uploads/1/3/2/8/132814930/257dc15.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/endnote_desktop_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/4666/5382/files/40102429444.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamawogedeveredu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/wokamawotapafatetesoba.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/feels_like_temperature.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9226/files/matrix_multiplication_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/12211767280.pdf
    • https://cdn.shopify.com/s/files/1/0437/9292/4821/files/nasutominalabelowoko.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_off00006198.bin
f5b05fce3c6df01a1529197d2ce0c7aa4f9ce9da957c34ad88dc90d2c29d2598		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 5884 bytes
font_01_sfnt_off00007573.bin
865c6ee64fc31f3c090f498dd7da52fd61e67623f7d1d8cf7a46b76b51d6d990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7573 10328 bytes

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