Malicious PDF — malware analysis report

Static analysis result for SHA-256 704b641f8e6ac781…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 16:16:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61997b7520b25f25d7e36dd99ecd0f78 SHA-1: 8c0b866bab5c6c8d10bf7e063a0538615e5b1399 SHA-256: 704b641f8e6ac781800d40cc3871d53f33bb0539a6545515efdb4cdc31f37aff
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/award?keyword=directv+remote+control PDF link annotation
    • https://kazanuwe.weebly.com/uploads/1/3/2/6/132683097/7801201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498992/normal_5ffac9f9b7bab.pdfIn PDF document text
    • https://cdn.sqhk.co/vatomepipiw/ehjOKpi/hard_bass_music_player_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/jqickqB/xezurogezegop.pdfIn PDF document text
    • https://fogasofimoxor.weebly.com/uploads/1/3/1/0/131071298/kiguwikuwaruve-xavurulafusup.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/ivhiCii/24165528826.pdfIn PDF document text
    • https://cdn.sqhk.co/demanajinu/nqghje4/78631779555.pdfIn PDF document text
    • https://cdn.sqhk.co/lawipavoso/jbujcsx/53459767551.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
    • https://s3.amazonaws.com/rojalexipokadaz/46628145261.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/excel_vba_get_last_used_column_number.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_off0000c873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC873 4404 bytes
SHA-256: fdfe8e4bcc0cdea6d7407c6a6893a5a2901f21ebfdcf42ba63b64be201e611db
font_01_sfnt_off0000d748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD748 10152 bytes
SHA-256: f699a705acba2a30291b62b4888b9f6a59d48f5375b5e9ac6383b6ef140aa490
font_02_sfnt_off0000fa09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA09 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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