Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8ec276abf62bf6…

MALICIOUS

PDF

36.4 KB Created: 2020-08-26 00:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cbf2dce5eacfb2acfc60338edf3e4d0 SHA-1: 840ef7141cad46921d9f79ff26c1b69b066ae5ed SHA-256: 7d8ec276abf62bf6af4b9a7f755604b615e227d37a5f186efbe4a48a8bd2e863
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=the+challenge+of+democracy+janda+free'. This URL is embedded within the document body, suggesting an attempt to trick the user into visiting a malicious site. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO manipulation or to obscure the final malicious destination. No scripts were extracted from this sample.

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.cc/pify?keyword=the+challenge+of+democracy+janda+free
    • http://files.capcollegeconsulting.com/uploads/1/3/1/4/131453365/napiwaxup_tunuvulikuzeke.pdf
    • http://kovufapa.helpsaveourkids.org/uploads/1/3/1/4/131483281/zuberuwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/33893704974.pdf
    • https://cdn.shopify.com/s/files/1/0439/8927/0686/files/bayad_center_mobile_app.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/33581320445.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/36097159512.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/putikusumidiveze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/cast_iron_software.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0263/files/8617884586.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/rigogajusaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/cleveland_browns_injury_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0447/0390/7993/files/nelonijimovazejiwatujeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/72042254960.pdf
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/aprender_a_leer_la_baraja_espaola.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_off00004e6f.bin
357d550a9ea7701be5dec331cead84e1b09bd37bfce601f22d76aba47fe3f0bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6F 5384 bytes
font_01_sfnt_off00006099.bin
098116670f48b3e76b9e2947bbcfa0fd3b56b43c206209480a651a9b340cb91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 10552 bytes

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