Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe442e6e96c9ecc2…

MALICIOUS

PDF

74.9 KB Created: 2021-04-19 21:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5abd38918c45a247e6c0922ed66e4b4c SHA-1: 72885bb73d80c298951d103a337297dfc82e388b SHA-256: fe442e6e96c9ecc2ae69a6b9cd1f94ca6542a549a782a40db7a1e0c03e38205e
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm on disposable hosting. The embedded URL points to a suspicious domain, suggesting the PDF is designed to redirect users to a malicious site. While no scripts were explicitly extracted, the PDF structure and URL usage are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://baarspo.ru/strik?utm_term=investment+science+luenberger+pdf+solutions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378623/normal_5ff7f35950be0.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/english_module_for_beginnersdvlp8.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/difference_et_repetition_deleuze.pdfIn PDF document text
    • http://glasshookahcatering.com/sezadeperivuzukorozatewkx9v.pdfIn PDF document text
    • http://discout.online/what_is_the_jewish_bible_called_in_hebrewgmzak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485443/normal_605a4c68da759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425217/normal_6011d301bff19.pdfIn PDF document text
    • http://eferevole.com/27256520315lir5b.pdfIn PDF document text
    • http://stankoff.org/jukogaponegomina70ffi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366969/normal_5ff95dbab9677.pdfIn PDF document text
    • http://13millions.store/27732076232lz52f.pdfIn PDF document text
    • http://koparikamoze.scienceontheweb.net/43351451903.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445326/normal_5ff5cca483e50.pdfIn PDF document text
    • http://bufibinokurun.scienceontheweb.net/zogidep.pdfIn PDF document text
    • http://rastet-malysh.ru/ponogoperupusuknz07b.pdfIn PDF document text
    • http://feedbacrnz.space/kumeruvosujfjj6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464297/normal_5ff4bedad0c68.pdfIn PDF document text
    • http://hookup757.fun/15033975157glsqe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450506/normal_6067ca3285da0.pdfIn PDF document text
    • http://spain50off.info/best_cryptocurrency_mobile_wallet5s1iu.pdfIn PDF document text
    • http://lifeit.pro/90400304493xbunv.pdfIn PDF document text
    • http://abwaab.su/wutiwusawobolatelepetsifa.pdfIn PDF document text
    • http://powuvomewekuxeb.getenjoyment.net/98274198465.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 5400 bytes
SHA-256: 8b05717646389acd3e8cb1587496d0b7b2904e664a8137d88c5fabfe6166e8b1
font_01_sfnt_off0000fb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB48 10008 bytes
SHA-256: 923be9b721c1c1cba9f13c8f0ecba837c086ad0a9f2f620bcad280c9c173a8f1

Open this report in the interactive analyzer, or submit your own file for analysis.