Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc292834aa2c8df…

MALICIOUS

PDF

32.3 KB Created: 2020-11-05 00:56:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3808703d660567d1613f95ab2b7e6c26 SHA-1: dc20edf05500d6363facb62a35aeda69020263ef SHA-256: 8fc292834aa2c8dfeb735484f256aa61666023f3300508da76d772ff758a6441
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to redirector infrastructure or link farms, indicating a phishing or SEO poisoning attempt. One prominent link, 'https://ttraff.me/123?keyword=types+of+context+clues+video', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary goal is to drive traffic to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.me/123?keyword=types+of+context+clues+video
    • https://cdn-cms.f-static.net/uploads/4380083/normal_5fa32dfbf150b.pdf
    • https://cdn-cms.f-static.net/uploads/4368955/normal_5f9d6dfe537bc.pdf
    • https://xexogabowagub.weebly.com/uploads/1/3/4/4/134438270/pozolek.pdf
    • https://cdn-cms.f-static.net/uploads/4388835/normal_5f9b79f6503ee.pdf
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/lajikofutojazatate.pdf
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/e27909d0be.pdf
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/funav.pdf
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/zeviwusonarebojosomu.pdf
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8b441c3aa65.pdf
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/sababupo-fivoxe-boxeforeze.pdf
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f9eb2f1ab4d5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2375549a-291b-4a1e-acf2-5cd10a5d7b3e/37314443005.pdf
    • https://cdn.shopify.com/s/files/1/0439/3952/8872/files/wawez.pdf
    • https://cdn.shopify.com/s/files/1/0508/1307/5614/files/canon_mg6600_manual.pdf
    • https://uploads.strikinglycdn.com/files/1dc306b9-7e61-4c56-a386-7586965fe4aa/economic_liberalism_ap_euro.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000676f.bin
dbc1165de681f68cdf8b356aeb8e827dcd43de1274b0ac4f57871a06b5957b1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x676F 5020 bytes

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