Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde3509d9abf9e0d…

MALICIOUS

PDF

49.7 KB Created: 2020-07-15 06:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a52c8b7580c66d6916d53b23f221677e SHA-1: 5bb3858cff533aa11325480326b2c770d65d9fc0 SHA-256: dde3509d9abf9e0d0d8b327b95a6f5abb50ca4abdd607a9243b94fbea82ca997
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' heuristic further supports a lure-based attack. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/wb?keyword=general%20awareness%20for%20ibps%20po%202018%20pdf
    • http://files.jilliansapothecary.net/uploads/1/3/0/7/130739023/letojilag.pdf
    • http://files.darryljarvis.com/uploads/1/3/0/7/130775607/vovadodofokidajonana.pdf
    • http://files.amyziserevents.com/uploads/1/3/1/8/131856270/2b8e1fc.pdf
    • http://files.jilliansapotheca
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/jugivupovakevezafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/99594757674.pdf
    • https://cdn.shopify.com/s/files/1/0430/7897/5639/files/lunexowamejajepabafuza.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/kafut.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/paneketapepinasep.pdf
    • https://fimesijonoba.files.wordpress.com/2020/06/wuroligemo.pdf
    • https://vujuzixo524002157.files.wordpress.com/2020/07/44347033473.pdf
    • https://wanetej.files.wordpress.com/2020/07/98014267912.pdf
    • https://pelejozexiko.files.wordpress.com/2020/07/94209185994.pdf
    • https://jidinetobix.files.wordpress.com/2020/06/32385965996.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/bulejemovupepoxunawuje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/29078235923.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/kevalimaduwodezota.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/14326168111.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0434/6272/1688/files/mixisatoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/57028409853.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_off000081c4.bin
2462c6eaacff1fc02ab1d21d19494917594903c2dbc5b5602d8f08b32af2ecd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C4 5528 bytes
font_01_sfnt_off000094a8.bin
85a5cc38c477a61fa9b0403d80bbd3d69919039f8822bc446777aafd2bb2ef22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A8 10688 bytes

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