Malicious PDF — malware analysis report

Static analysis result for SHA-256 234b827b476eb1e3…

MALICIOUS

PDF

50.1 KB Created: 2020-12-14 20:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 211f76c53a5360cec3c3e836a03948a8 SHA-1: 1e912fc84ef61920c612d5775f6f1ffa911ead42 SHA-256: 234b827b476eb1e34d330d42980c183ff7f293f2c589c461d47314abf1d53099
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to potentially malicious or suspicious domains, indicative of a link farm or phishing campaign. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to malicious sites, likely as part of a phishing or malware distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8156

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=the+globe+academy
    • https://nopirirog.weebly.com/uploads/1/3/4/2/134234714/rajasixajigeferidila.pdf
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5f909792c62ee.pdf
    • https://cdn-cms.f-static.net/uploads/4378379/normal_5f920729c06f4.pdf
    • https://static.s123-cdn-static.com/uploads/4468812/normal_5fc5395297a73.pdf
    • https://neburaguvud.weebly.com/uploads/1/3/4/4/134477844/jamikawapizerew-legoxe.pdf
    • https://bigimenuxorotel.weebly.com/uploads/1/3/4/6/134655509/zisekixegegew-voxerolabowuzo-guzisodarojowip-nepomakema.pdf
    • https://cdn-cms.f-static.net/uploads/4474222/normal_5fb7b49a22d78.pdf
    • https://lemitixodage.weebly.com/uploads/1/3/4/8/134868200/5f3ec07e7.pdf
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f8ed0204dae2.pdf
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/777712772b404.pdf
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/c9e4de.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e72e833a-0938-4c2f-8b74-fdca31249a1d/parallel_myths.pdf
    • https://uploads.strikinglycdn.com/files/dd6f9687-5fc2-4923-8915-ae7057882dd3/avast_free_code_activation.pdf
    • https://uploads.strikinglycdn.com/files/c9697530-286a-4645-8bac-6588da4e3218/widibuwadukodejovovagefo.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac82.bin
d001c54f12461adc9b26cb9fd41c36a69419967d54cf34aaae1b325ba38cc2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC82 5268 bytes

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