Malicious PDF — malware analysis report

Static analysis result for SHA-256 44490691ff42784a…

MALICIOUS

PDF

43.8 KB Created: 2020-09-10 09:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd5224c810f36235b9fcb0d1d6d053d1 SHA-1: b511b6d723badeaea6542251751fbe4b37e91bf6 SHA-256: 44490691ff42784af659a0c1555ad173096038c19ace33aff1e1788393ac68bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=diablo+3++windows+10'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to shopify.com PDFs, and a high-severity heuristic indicating instructions to disable security software. These elements suggest a social engineering attempt to bypass security and redirect the user to malicious content.

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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.club/wix?keyword=diablo+3++windows+10
    • http://files.louiseashcroft.org/uploads/1/3/0/7/130739315/6565815.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/26338118245.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/zebenofokokamokobesede.pdf
    • https://cdn.shopify.com/s/files/1/0439/3893/9048/files/chromogenic_coliform_agar_test_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4694/files/bpsc_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/91175169699.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/toefl_test_preparation_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/83754477009.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/ziwen.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/bin_sachivalay_clerk_syllabus_2020_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/rubber_band_gun_plans.pdf
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/kazaxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/jokazajifajefufum.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_off00006ccd.bin
4be55a1667945885887c4e39eba04cb0a370f5e36312ae8b68d040e6efc4c6b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCD 5312 bytes
font_01_sfnt_off00007f05.bin
d3549005ddfb784455ca2d5a858443dcdc82ecafe6fea89830cac7c51b32aa0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F05 10360 bytes

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