Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80830c8441de056…

MALICIOUS

PDF

35.7 KB Created: 2020-08-04 22:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78e780ac7acc2815e36ac3568f98acea SHA-1: 450447bab10a20d8cc680018978f3a990596a951 SHA-256: e80830c8441de0567ed8214df4f24d42b613859f2f3f5558deff7fbc4b297820
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=alter+ego+a2+pdf+gratuit+avec+cd+audio+mp3+gratuit`. The document body, though partially corrupted, contains text that appears to be a lure for free audio content, and the PDF also contains a link farm of 18 external PDF links, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a phishing or malware distribution site.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=alter+ego+a2+pdf+gratuit+avec+cd+audio+mp3+gratuit
    • http://files.arvidsonconsulting.com/uploads/1/3/2/6/132683292/9193707.pdf
    • http://files.localproduceguide.com.au/uploads/1/3/0/8/130874109/wawanudawasori.pdf
    • http://files.majestytheseries.com/uploads/1/3/1/6/131607467/mujojopiri.pdf
    • https://cdn.shopify.com/s/files/1/0434/7228/9944/files/febavosutomisog.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/41313507666.pdf
    • https://cdn.shopify.com/s/files/1/0429/0517/4183/files/vitozukupinofepapikisudug.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/mogikesamubutotoma.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/92142412541.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/rovatodufutabelaxigikedux.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/91371944723.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/59989222615.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/mesep.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/vitowisigitipuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/7783/5681/files/gozageguzuwuledatusopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4022/files/pifufozixeginixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/23416843941.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/6732908083.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/mosidobiporuwezane.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_off00004cad.bin
1c6a48ce37ea44a4c87e3217195d4ad55376a8989d7026054ccac0555a17abfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAD 5644 bytes
font_01_sfnt_off00005fe1.bin
a92564556bc751d778487aac75d9dadb79a7efd07c184aa2e79c2b61a783601c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE1 9832 bytes