Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded64fc32f0e22b6…

MALICIOUS

PDF

50.1 KB Created: 2020-08-08 06:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 735c8af1682f78324f2b8eba438e8d73 SHA-1: 268481b5664816c021ce9903ad77f2548b9014bc SHA-256: ded64fc32f0e22b6db032b89a01851f4fc5f8a9d43d636b890b0333d4963bd57
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for free PDF downloads. The primary malicious URL identified is ttraff.com, which redirects the user. The file's purpose appears to be to redirect users to malicious sites under the guise of providing free content.

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=old+ayurvedic+books+in+telugu+pdf+free+download
    • http://files.melissaebbe.com/uploads/1/3/2/6/132681352/midulave_lugotazawiteru_dixakulebeka_romazakotuwez.pdf
    • http://files.dechineselincs.com/uploads/1/3/0/7/130740625/5314133.pdf
    • http://files.tinyarcademachines.com/uploads/1/3/1/0/131071209/9179669.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/pearl_necklace_meme.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/zivanisedam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/monthly_gk_capsule_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34996744553.pdf
    • https://cdn.shopify.com/s/files/1/0437/1434/7160/files/dexibejerutibojub.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/badminton_court_dimensions_in_feet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/xiwerevovuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/90020507448.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/mataxexim.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/weather_in_taos_nm.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6f.bin
7dac2d3e8ecad8948573f7ac850f0d4bbef93f485ef0e4af37cb8a360b8ad0a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6F 5808 bytes
font_01_sfnt_off00007f5b.bin
fdbde9b545c423792915e00c78d93af552e6e31426da2b0ab1f896e4ac18ff6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5B 10080 bytes
font_02_sfnt_off0000a212.bin
95a3c4fdd3cddc0ca62194c447baa258f3f726bdab77b535d14780bf2a6ab8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA212 7540 bytes

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