Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3bb2e5b38841cd…

MALICIOUS

PDF

80.1 KB Created: 2020-09-16 16:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24e551557e839a099ae764258423a5e8 SHA-1: 5a90d46075b9999292ec14077decb2119eca05b0 SHA-256: 7a3bb2e5b38841cd566a57ffd940cd67f523fc4f39d6c7e1044f17cb2671e140
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=donkey+kong+64+wii+download'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The document body also contains a visual call-to-action phrase, reinforcing the lure to click the malicious link, likely to download unwanted content or redirect to further malicious sites.

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.club/wix?keyword=donkey+kong+64+wii+download
    • http://segar.k2physiotherapy.ca/uploads/1/3/0/7/130776783/jaxosos-giwasaleg.pdf
    • http://sedixol.lifequestkids.com/uploads/1/3/0/8/130873987/3823685.pdf
    • http://files.wesvaldez.com/uploads/1/3/1/3/131383575/8f8bbbf51aa.pdf
    • http://files.dancewellny.com/uploads/1/3/2/7/132740594/gopofob.pdf
    • http://files.georgiasfossils.com/uploads/1/3/1/4/131406780/wupafadilumumofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7030/0065/files/vosefub.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/61280555286.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/86516038143.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/bifeniw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0830/1989/files/tetonuloxiropibotaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/99162624795.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/thunderbird_vs_evolution.pdf
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/blue_collar_crime.pdf
    • https://cdn.shopify.com/s/files/1/0437/6838/1591/files/que_es_un_enlace_quimico.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_off0000db26.bin
d44d0bcc79a05e39ec4f67683222e0976b39031b3a8970e78b98c3c225a01470
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB26 5216 bytes
font_01_sfnt_off0000ed28.bin
260b283c1072b59a415bb92cc1a4d48b162f1b0977bf0264da6a87e9c47d933a
pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 14160 bytes
font_02_sfnt_off000119ba.bin
b07c92ab5e991eb39635c0faeb008e5da9ce6f21bdc1768af4b92b07bb5265a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x119BA 17360 bytes