Malicious PDF — malware analysis report

Static analysis result for SHA-256 93212775eb44b08a…

MALICIOUS

PDF

42.0 KB Created: 2020-09-12 07:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd7bef4b9119354ae392239a7c6f457 SHA-1: d28bb8c2f6cd9c2a1b2d0571a22b6ab6ab20e122 SHA-256: 93212775eb44b08a5f6a5ead38fd4e1aba4e9f660e0b73d0da00d8ff53c5c70c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.club/wix?keyword=aql+full+form
    • http://letup.carpetcleaningharrisonburg.com/uploads/1/3/2/6/132695454/pojitokatemut-sakoxu-vofekowiziguf-jamet.pdf
    • http://files.heidisfoundation.com/uploads/1/3/2/6/132695294/26d74a2636acf.pdf
    • http://gabilinol.shopprettyplaces.com/uploads/1/3/2/6/132682076/kekinewosi.pdf
    • http://files.countryweddingsatcrookedriverfarm.com/uploads/1/3/2/6/132695572/ligodut.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/asiana_a330_business_class_trip_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/bupabiburizugejumiseli.pdf
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/achyutam_keshavam_krishna_damodaram_female_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/roxugula.pdf
    • https://static.usrfiles.com/ugd/e8506d_f528fb51bd504eeca2429dc82633c739.pdf
    • https://static.usrfiles.com/ugd/6846fe_3c60ff949b444ba9aa130464b2d161e3.pdf
    • https://static.usrfiles.com/ugd/9757e7_a2e9e244d2744b4792877462ce0656f6.pdf
    • https://static.usrfiles.com/ugd/36f25b_8999a83645494cb48758ae9c72dbd96f.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_off000068af.bin
ba7bf63d574564ba010685a81969dfaea3642005c205a22f5daf2a77d2e42a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68AF 4640 bytes
font_01_sfnt_off0000786a.bin
afad60625fe97f84a8020d1bd2f8ebcd61ac46a19dd974d829e1b91948843484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786A 10504 bytes

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