Malicious PDF — malware analysis report

Static analysis result for SHA-256 4492e62cc94ec525…

MALICIOUS

PDF

75.8 KB Created: 2021-03-29 09:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 81f308a5ed0aa9829ff1813eb8c0237c SHA-1: da7421b9b464b9e354e32dfee2b249f03c9f39bc SHA-256: 4492e62cc94ec5254e02f05681a65bd0714ad4bc4c7debceb022589592f60c9c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a site offering cracked software, a common lure for phishing and malware distribution. The PDF structure and content suggest it's designed to redirect users to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/wix?keyword=photoshop+cc+2019+crack+tumblr PDF link annotation
    • http://tagukefinifofe.iblogger.org/47461007699.pdfIn PDF document text
    • https://mulexiti.weebly.com/uploads/1/3/1/0/131070330/2361096.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456705/normal_60197a53ed0d2.pdfIn PDF document text
    • https://vobanugan.weebly.com/uploads/1/3/5/3/135340106/semuwaku_teduvowoked_dakon_gexadoninon.pdfIn PDF document text
    • http://rapegupuv.iblogger.org/mirevud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd1d93221823.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/xedamorixovaw.pdfIn PDF document text
    • http://leririv.sportsontheweb.net/kiran_s_psychological_aptitude_test.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415081/normal_601ba5d44f7d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_5fc7e909b2e32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e0b983-c512-45bc-9eb6-559990b5bee5/super_mario_brothers_ds_game_cheats.pdfIn PDF document text
    • http://pivirujifija.epizy.com/16135498357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3bf8c85-c92f-42ac-8983-0d9ff69e36e3/vuwinajid.pdfIn PDF document text
    • http://fetufebutegiv.rf.gd/savugesiferolivabu.pdfIn PDF document text
    • http://futebowa.atwebpages.com/spanish_grammar_in_review_answer_key.pdfIn PDF document text
    • http://navadolaje.rf.gd/becoming_supernatural_drive.pdfIn PDF document text
    • http://bavevex.onlinewebshop.net/is_fakespot_legit.pdfIn PDF document text
    • http://vavesimor.epizy.com/mimujemetedotedez.pdfIn PDF document text
    • http://lopakesuzuw.atwebpages.com/xoxagedujoz.pdfIn PDF document text
    • http://silugat.epizy.com/xedevasiz.pdfIn PDF document text
    • http://jeliponotetivek.epizy.com/carte_du_monde_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90b161e-0664-446e-99df-52e45e0a09ef/retafo.pdfIn PDF document text
    • http://nomabatapumijez.epizy.com/2961146682.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_off0000eb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB36 5860 bytes
SHA-256: c36a02a5f8866d4a0fe2df7953cabd2933a7e179db29fee93e279352ce6e7179
font_01_sfnt_off0000fef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 10120 bytes
SHA-256: 3426042759d207a3bdb3f2b7022750f175baf4588a016045c8e102afd20dc9ec

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