Malicious PDF — malware analysis report

Static analysis result for SHA-256 862f7e99edbad0d5…

MALICIOUS

PDF

36.1 KB Created: 2020-09-04 17:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f9fd29f77fe9c962cbb54673fe51f6 SHA-1: b1f44fdd7dcae3bb509925a0e50a02311b96f0ce SHA-256: 862f7e99edbad0d5cd71b07a946916430dcf23a4753aec42e27336396615332b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains text related to 'Costs of youth homelessness in australia report' and the malicious URL itself. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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.me/wix?keyword=costs+of+youth+homelessness+in+australia+report
    • https://cdn.shopify.com/s/files/1/0434/6026/4086/files/carson_dellosa_reading_comprehension_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/avid_elixir_bleed_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0435/8019/4975/files/ceremony_online_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/97457258896.pdf
    • https://static.usrfiles.com/ugd/b8c837_e80f3863e9394ff49499568e03ae0785.pdf
    • https://static.usrfiles.com/ugd/db93e9_58d9ecfac9dd4e588aa50acc70894105.pdf
    • https://static.usrfiles.com/ugd/268ab1_8c9ede33dfbd43168c5a3c5c228a2a07.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d91c7dd2e1544299dda58d30677f2ce.pdf
    • https://static.usrfiles.com/ugd/4cd51e_fe997263d7f24cab946ac4df55ff0733.pdf
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/marine_corps_drill_and_ceremonies_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/pondicherry_university_hrdc_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/1524/1891/files/tumajaboderusid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/vasidopevalukul.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/19577262495.pdf
    • https://static.usrfiles.com/ugd/451461_568920d152714eb69e60097a91c8e485.pdf
    • https://static.usrfiles.com/ugd/9ea91e_7075c652b4734b16a14a659581f6175b.pdf
    • https://static.usrfiles.com/ugd/87a178_eea0521f24fd4a0a82565057d6799fea.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_off00004d93.bin
9a5720d77f91e58bc1d250a1d0a5a611300b188777e70811de1124ac9a4e901c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D93 5148 bytes
font_01_sfnt_off00005eee.bin
37db7ec29bb5de08a686670ee76454a190785b67123881362300b065899d2497
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 10116 bytes