Malicious PDF — malware analysis report

Static analysis result for SHA-256 99fad67537c59a14…

MALICIOUS

PDF

72.0 KB Created: 2021-02-24 15:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5f627fb8c8970d4c79be716aa38e6d36 SHA-1: e5968682ba83c2fcf74b08e69f9c8d828127cf3b SHA-256: 99fad67537c59a1488dcbdb128d8e89a53bf5e22fbfa42a1838789f8db57671c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=tracfone+lg+306g+problems PDF link annotation
    • https://sinupumu.weebly.com/uploads/1/3/4/8/134893056/gisofimawid_sofefof_vixor.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/sezotadigafowek.pdfIn PDF document text
    • https://finijigif.weebly.com/uploads/1/3/2/6/132681422/bace8c87a1.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/siwuxujububazaribaraketoz.pdfIn PDF document text
    • https://getiwojaxewife.weebly.com/uploads/1/3/4/0/134012456/a55919d5f8.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/data_structures_and_algorithm_analysis_in_java_3rd_edition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vopipewulowapa.rf.gd/lightning_thief_original_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/do_civil_engineers_make_good_money_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/regesajovodibebutotap.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/d_link_dir_655_wps_button_location.pdfIn PDF document text
    • http://diwigivexuvobe.epizy.com/ambulance_sound_song.pdfIn PDF document text
    • http://fibilizovowudux.epizy.com/87091051364.pdfIn PDF document text
    • http://mujawonevafo.rf.gd/zolofotedejegabozopasesa.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/google_analytics_insights_report.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/compressport_calf_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/agnus_dei_piano_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/58062082501.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/48958413240.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_off0000dbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBF 5884 bytes
SHA-256: 7e4e313a3bf30b63d57a327ea3c532c53cb2d4db899ef9075351c0b297ee90be
font_01_sfnt_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 10448 bytes
SHA-256: e5980fd16e848a2085bdbfb4eee0d8749b76b7a693a2bd23728f366873df515c

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