Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79272315fc8a4f5…

MALICIOUS

PDF

39.0 KB Created: 2020-08-10 21:31:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61d918c358934d83420d027954aaf09d SHA-1: c8234a6cf84a4d43693ab2118c1e6f987d5e72ac SHA-256: c79272315fc8a4f55051775edc25acf6b48739fa32bdcc5a846aa341b5930b70
120 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=asturiana+falla+pdf, which is likely used to redirect users to a malicious site. The document body also contains this URL, reinforcing its role in the attack. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.cc/pify?keyword=asturiana+falla+pdf
    • http://zezenij.arthurgietzelt.com.au/uploads/1/3/0/8/130874330/92e92c2dae0.pdf
    • http://noxasuwap.zoomintojune.com/uploads/1/3/1/4/131437657/fb838.pdf
    • http://files.gracespacestudio.com/uploads/1/3/2/3/132302764/e697a.pdf
    • http://files.davidcainrscp.com/uploads/1/3/0/7/130740524/sabaloxenojezudesil.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/vuvezejagetivit.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/typescript_clone_object.pdf
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/fat_loss_forever_biolayne.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/1066461880.pdf
    • https://cdn.shopify.com/s/files/1/0434/3391/8616/files/92397277742.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/18310821654.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/kotokugusuxosa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/33600238621.pdf
    • https://cdn.shopify.com/s/files/1/0434/2611/9831/files/78164427560.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/wizarelevusijafava.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/axis_fd_rates.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8802/files/78805888577.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/66198784793.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_off00004e3f.bin
fe5c71cd26699a2f346d20144277ff74176a3889c1d9b9088748f55fabaf468f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3F 4680 bytes
font_01_sfnt_off00005e17.bin
99a5b2d45c3816dfca1561da2f0d2d7749a243d874da707f3242739a15795a3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E17 10172 bytes
font_02_sfnt_off000080ec.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x80EC 4324 bytes