Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56ff120d966c0b2…

MALICIOUS

PDF

41.7 KB Created: 2020-08-26 12:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f509f9838bed4efa1849edb7f9bec3 SHA-1: 010fcb519096a95692ec0106799edf053d4945fd SHA-256: c56ff120d966c0b21c58d5d3812dd58050ad1cff5f18da0e058ff53338aba3a0
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains numerous links to external PDFs, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The presence of a call-to-action button further supports a malicious intent to lure the user into clicking the link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=family+feud+game+template+google+sli
    • http://mowafemon.thebusinessetiquette.org/uploads/1/3/1/4/131453645/6610288.pdf
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/dekurumexisurirulofagis.pdf
    • https://cdn.shopify.com/s/files/1/0436/4333/8912/files/factorio_balancer_blueprint_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/tapisikav.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/toragodomabetipexokawawu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7134/7619/files/bapibofajutapide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/application_letter_semi_block_format_sample.pdf
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/lozukesidenavu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/bacilos_gram_negativos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/78045126238.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/98738968375.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/82777541843.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_off00006446.bin
9db14f4716e5191470c733415cb51457b1066588f1bbb21058f1f08b068cc660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6446 5320 bytes
font_01_sfnt_off00007662.bin
6bc1ed995a6938996d2b85e49e8794bd16a4d53734cfb1df0b7fcd4cbe849af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7662 10460 bytes

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