Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86ff62077b614fa…

MALICIOUS

PDF

74.6 KB Created: 2021-03-17 20:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 92f16533cbafdbd4ec6ba0e4a95ad119 SHA-1: fd1ab0035517e1568a33e9f3d12a4cf543753353 SHA-256: d86ff62077b614fa1ba894c71fdff028fb3766293c6b781f6fa08399ca2744dc
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=graber+guardian+2+bike+trunk+rack+fit+guide PDF link annotation
    • http://luxshop21.site/goxefuqbgvv.pdfIn PDF document text
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/sariparevegure.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/batabuwowiwapujevapufazefexunh.pdfIn PDF document text
    • http://zawiferiga.22web.org/bidafifubakerosom.pdfIn PDF document text
    • http://glav.info/dopimenamazilipazuxur18l.pdfIn PDF document text
    • http://gijipodotetojo.22web.org/word_connect_answers_488.pdfIn PDF document text
    • https://sozuxope.weebly.com/uploads/1/3/4/8/134873608/fa5200e.pdfIn PDF document text
    • http://koteyarn.moscow/bejatuzh64qu.pdfIn PDF document text
    • http://onenature.space/florida_economics_book_answerswm0v0.pdfIn PDF document text
    • http://zdsshop.top/taiwan_train_mapddr4y.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/10ae4ef7.pdfIn PDF document text
    • http://limecash.xyz/kewovogasovetotitijitixzcnb.pdfIn PDF document text
    • http://trells.space/organizational_behavior_management_quizlet_final_examtvaai.pdfIn PDF document text
    • http://biomanix.best/que_es_educacion_fisica_recreacionwfani.pdfIn PDF document text
    • http://itsnat.space/329309621393i0i7.pdfIn PDF document text
    • http://topcabinets.xyz/44656878738cvedk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dobejul.epizy.com/zejilijowuzoserurewo.pdfIn PDF document text
    • http://nurekalu.epizy.com/kejudefegaxifib.pdfIn PDF document text
    • http://fivasire.rf.gd/guidelines_for_drinking-_water_quality_fourth_edition.pdfIn 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_off0000e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 5344 bytes
SHA-256: f9c0870b21d8658577c5d594507ff39a05b058ac7e0af2360bec9dfd0257e14c
font_01_sfnt_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 11644 bytes
SHA-256: 5d6ffa0491a2498e31a70522b2be301931a7acc1cf88834f62ec1b050bdd03c1

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