Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbd4d8eefec9127…

MALICIOUS

PDF

45.5 KB Created: 2020-08-09 12:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58dbaacb428dffd4bb03162108ce950d SHA-1: cdec32c6848cfd6a17e4b6bfd71228e3f5e27b0e SHA-256: ccbd4d8eefec9127178d0a672ac8dd51f8be25cea28334f882b1d4bbac3c3265
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'aspen plus 2nd edition pdf' and the malicious URL itself. This suggests a social engineering lure to trick users into visiting a potentially harmful site. No scripts were extracted, limiting the analysis of further payload delivery.

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.com/pify?keyword=teach+yourself+the+basics+of+aspen+plus+2nd+edition+pdf
    • http://files.coronadohighschoolorchestra.com/uploads/1/3/1/8/131856124/semomitelo-wapugowake-lezim.pdf
    • http://files.aylinlaw.com/uploads/1/3/1/4/131437987/wovozokinikovezelog.pdf
    • http://files.hiphopcorner.org/uploads/1/3/0/9/130968917/vokigagikidojujumed.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/artificial_neural_network_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/76350909654.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/27040973049.pdf
    • https://cdn.shopify.com/s/files/1/0438/9208/0795/files/64235754605.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0446/3912/5667/files/gomuteka.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/67601752249.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8945/files/basic_physics_formulas_and_units.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/tivilipepobuxipidupol.pdf
    • https://cdn.shopify.com/s/files/1/0438/5010/4982/files/gofivoti.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6208/files/nusomasejiwaxed.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_off000065fb.bin
43514027035f4f06b5b9f5e038ffabbc51f81a64ef94b84a9fec26caa1ac8f88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FB 5568 bytes
font_01_sfnt_off000078e7.bin
4fca18acbc977edf76929ee88efa273515a5aa43aa87cab027e368c23ffc786f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E7 15684 bytes

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