Malicious PDF — malware analysis report

Static analysis result for SHA-256 af708ce9807e6f57…

MALICIOUS

PDF

47.6 KB Created: 2020-08-10 23:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ffae29559592db82a744244d97ca9cc SHA-1: 8b748302fc43541d29e825568ede1246fa27ca7f SHA-256: af708ce9807e6f57e077969e91e82c7a8125c1d1ecade548ffe341cf491151a2
128 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure malicious destinations. The critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=self+attested+income+certificate+pdf'. The SE_DOWNLOAD_BUTTON heuristic further supports a deceptive lure. No scripts were extracted, but the presence of multiple embedded URLs and the redirector link strongly suggest a phishing or social engineering attack.

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/pify?keyword=self+attested+income+certificate+pdf
    • http://dutum.hilltoppreschool.org/uploads/1/3/1/1/131164250/lewokasodutixoxa.pdf
    • http://files.katherinemgjones.com/uploads/1/3/1/3/131384340/nuruwev.pdf
    • http://zufowapuj.gotothestation.com/uploads/1/3/2/8/132816202/9996251.pdf
    • http://waxug.creeksideband.com/uploads/1/3/2/6/132696030/binukejujolune.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/mojudaroguf.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/primal_surge_mtg.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/soxeramiwiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/lorivinosolunitaxubi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/pesidatexulofidenuxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/kozizevok.pdf
    • https://cdn.shopify.com/s/files/1/0434/4758/2870/files/45878314924.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/jixotonavejajokozagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/sezutuvejokanuminugus.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_off00007073.bin
ea18d12de3b231b305d916e97a9b3fe700a81a38429b6dccd25d7533a54d13f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 2872 bytes
font_01_sfnt_off00007aaf.bin
e5b378678f43707717497d8d408abed70b22684eafebea3f2a0af60fdf430e4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAF 5404 bytes
font_02_sfnt_off00008cef.bin
e4ea1f3709d7a46af70ad2b7c8629c5cd1acb698c3e75faed0d209cab0540402
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 11020 bytes