Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad89f09da3401285…

MALICIOUS

PDF

47.2 KB Created: 2020-08-20 19:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d323ca941b6cd9539e284ddcdb6428b6 SHA-1: 7d1a6f626d2a18f6d4ac8203f9ae0735fa437599 SHA-256: ad89f09da34012853d32b788868e2e41b27aea5c3299905f347646c8be0b6966
128 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. This link is presented as a download for 'Yowhatsapp 2018 latest version', a common lure for social engineering. The document also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. No scripts were extracted, but the primary attack vector is the malicious redirector.

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=yowhatsapp+2018+latest+version
    • http://wutobor.adrianpollard.net/uploads/1/3/2/6/132681927/kufaregelotifo-vevezo-vimapugefitalor-savusururiz.pdf
    • http://walur.lucyvcantu.com/uploads/1/3/2/6/132681352/wowubiginoma_kutosogaxijot.pdf
    • http://files.lgbtasylumproject.org/uploads/1/3/0/7/130740483/digorega_fuxix_givanelope_vononoxotepapij.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/gegib.pdf
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/lisekufewijuwofajir.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/billboard_hot_100_2018_zip.pdf
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/44717242725.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/46761277396.pdf
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/zevozopexudutijegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/8369881781.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdf
    • https://cdn.shopify.com/s/files/1/0435/9628/4062/files/94292015059.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/folakil.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/66847314196.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_off00007a8b.bin
65c15269c38c50cde4b13adcb875418c5a6e9d42df8bb07a9ecdfaeea42b379d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8B 5540 bytes
font_01_sfnt_off00008d7a.bin
440517e96b4bae0d0f5042245891f21370cfa8760986e505161161dc09b16608
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7A 10052 bytes