Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96c3f7568a25233…

MALICIOUS

PDF

80.3 KB Created: 2021-04-17 10:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 748f0392833f8d9f8b6461e0b981b129 SHA-1: c44f557d82119e14138368596958825aa5bfcf2f SHA-256: b96c3f7568a25233047d97be85c6212fd77c7b65a5a66dfebacb6c30d9d07cfd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the overall structure and URL patterns are consistent with malicious PDFs designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/strik?utm_term=answering+wh+questions+worksheets+for+kindergarten PDF link annotation
    • http://hellochildren.online/895480192077mras.pdfIn PDF document text
    • http://pumba-timon.space/gagowixibapzow2.pdfIn PDF document text
    • http://vurupilinimini.iblogger.org/emma_goldman_living_my_life.pdfIn PDF document text
    • http://upgrade4me.com/rurouni_kenshin_trilogy_downloadsugb6.pdfIn PDF document text
    • http://2020coupons.info/kubuzovokanojalidum1ccpu.pdfIn PDF document text
    • http://cabinetsapp.xyz/173332783607zv25.pdfIn PDF document text
    • http://cleanup-sale.site/how_much_does_it_cost_to_buy_starbucks_stockn0g1k.pdfIn PDF document text
    • http://chemistryplus.space/285179769064k02o.pdfIn PDF document text
    • http://bionatur.space/minecraft_1._7_2_huzuni_indirlw5nx.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/aurelio_stern_bastelanleitung.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/goxirigafebikizikakenuxi.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/what_does_the_area_under_a_speed_time_graph_represente92e8.pdfIn PDF document text
    • http://kajejib.medianewsonline.com/berizoxig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wegamaluperetuj.atwebpages.com/55575153921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be63aca5-0597-4ef4-840d-2648e3501c1a/le_voyageur_contemplant_une_mer_de_nuages_commentaire.pdfIn PDF document text
    • http://gaxojasajanori.rf.gd/stampante_epson_wf_2630_sostituzione_cartucce.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/google_sheets_combine_duplicates.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/2905273665.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/cfa_level_1_study_planner.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/nutitoxevebemenup.pdfIn PDF document text
    • http://dibiremiva.rf.gd/85482370974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a419e4b1-df90-47e9-b206-bd2dfb1610eb/how_to_connect_sony_mdr_zx750bn.pdfIn PDF document text
    • http://fidalanono.myartsonline.com/3_octave_violin_scales.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE2 5288 bytes
SHA-256: 9500ae1c765427fb95a8029f179a457a515e2460221dfe8510d4bee839c1a067
font_01_sfnt_off000101d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D5 10336 bytes
SHA-256: 7c2a48b00c6e4d38e6f807baaf99dca0066750f8834e303ae9379b6f4e383b45
font_02_sfnt_off00012500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12500 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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