Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc750fef1a09dfd…

MALICIOUS

PDF

66.8 KB Created: 2021-03-17 14:59:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5e5b3accee5c1321e5e0900ac4d0e99 SHA-1: 60008df70abad240dfa90e246fb9cdc8ec131fcc SHA-256: abc750fef1a09dfdc9feab8dc94c9664034eb86f7d88384cbd5c6253c07d537a
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a phishing lure that directs users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9417

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/award?keyword=statistics+probability+problems+and+solutions+pdf
    • http://duwudivusupo.mygamesonline.org/94298269466.pdf
    • https://static.s123-cdn-static.com/uploads/4373986/normal_5ff49e63db968.pdf
    • https://deserekinubolid.weebly.com/uploads/1/3/4/3/134319780/2045805.pdf
    • http://zegererevez.medianewsonline.com/calculus_books_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4419437/normal_6013b5be5fbd3.pdf
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/bixelufiwel-jezesivid.pdf
    • http://safijejog.mygamesonline.org/46734532110.pdf
    • http://mrshadow.net/kewerovetizipidel7folu.pdf
    • https://jazelisis.weebly.com/uploads/1/3/4/8/134870131/e4260bed6506d2f.pdf
    • https://jobifavizatop.weebly.com/uploads/1/3/4/1/134108852/8470677.pdf
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/8572759.pdf
    • http://gapijet.scienceontheweb.net/al_quran_free_download_for_mobile.pdf
    • http://legegapepapo.medianewsonline.com/basic_concepts_of_chemistry_download.pdf
    • https://vuzupugum.weebly.com/uploads/1/3/1/4/131453250/9863939.pdf
    • https://siwuxamafovad.weebly.com/uploads/1/3/4/4/134489720/924bb.pdf
    • https://cdn-cms.f-static.net/uploads/4381090/normal_60378c7196972.pdf
    • https://cdn-cms.f-static.net/uploads/4471946/normal_60479bc70777f.pdf
    • http://texoraw.sportsontheweb.net/how_to_become_a_successful_real_estate_agent_in_florida.pdf
    • http://study-english-05.site/when_was_the_dell_latitude_e6540_madeei2uo.pdf
    • http://unlockdeals.shop/8833562890et56n.pdf
    • http://vnds-super.space/can_you_use_audible_with_kindle_paperwhite4xt3f.pdf
    • http://world-wildshop.com/51834498878ednkw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dapizodipe.myartsonline.com/75733047677.pdf
    • http://pusebirenox.myartsonline.com/tepugikevekasipitis.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f23e.bin
337798e40dca47a4ae8ae99c4ab85fe5f6b20b03de0cab758dfa1357e702ec62
pdf-font-stream PDF embedded font (sfnt) at offset 0xF23E 5644 bytes