Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74da967151c07fd…

MALICIOUS

PDF

73.7 KB Created: 2021-03-13 19:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f62d447d24653cd4da62180549b63761 SHA-1: 494599143a99ebfdd9fe36e5f5d124e41ad8993d SHA-256: b74da967151c07fd3b97d181c23823c9b9104385c7609eb029106f25d6930210
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a URL that appears to offer a 'portfolio template ai'. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing campaign aiming to trick users into downloading further malware or engaging with malicious content.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=portfolio+template+ai PDF link annotation
    • http://com-copyrighit.com/54687638428x5ss.pdfIn PDF document text
    • http://italonewsero.site/oak_study_furniture_ukt42ak.pdfIn PDF document text
    • http://migerov.xyz/89096644533snn3b.pdfIn PDF document text
    • http://znalomstvavip.site/16015022221hqr01.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/658898073488h7pr.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/9ad57fde-4593-4a86-9ab8-6f5ca67914f3/18067688210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3f5f057-25ba-42e1-bdb5-4b17050af8db/luxenixe.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/dexumadexudeja.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/new_criticism_example_story.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/62204067510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c5bfff5-bac7-44aa-a7e9-f1be5b9e51bc/how_to_use_a_power_pressure_cooker_xl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b222f8-3ea5-48a4-9e21-9c16a1d67b1a/how_to_write_a_faith_statement_for_confirmation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c1409b7-0b79-4e0d-bc25-0cd080ae2df5/pexejinudon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd2da6d-6a8e-4b36-ac68-c1310ca1d47d/jegasepuzasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/765d504f-d89e-4aaf-ba02-a33ec106dfa7/puduwifuvovosefukesago.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/41450368510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/806583e0-e056-467c-be82-69ba9202cbc8/78372302744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e68ba82-ee95-4738-9175-3bc97160cfbe/rasusasenenukapuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57c1aaa-5b52-440c-9b63-ae989f160bc0/how_to_handle_a_new_team_as_a_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091f3770-66e3-4390-a823-52506e4c8d23/3223884536.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/75523279784.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/90222808270.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/nbfc_balance_sheet_format_2018-_19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e83eb9-a91c-43c7-a70f-1052fb844273/tatobikebulexakurevap.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/36559756078.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_off0000e59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59B 4872 bytes
SHA-256: 76981f3bc2d28ec44a94a76692064a27986130370fbfab52e126e69e52495688
font_01_sfnt_off0000f612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF612 10444 bytes
SHA-256: dcd243f3898c06bbf35bb8b6b500016e428bf18cf10b36f4a38322bda6d95ac2