Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a414e20d05c170e…

MALICIOUS

PDF

72.2 KB Created: 2021-03-03 07:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2badd2e661b25114b1070c58324bcdd6 SHA-1: 5a7f387ce87ba7d19c473b30132c32251cf58668 SHA-256: 9a414e20d05c170e6b8309a2fff57f583572584b5afdeff1e79bbff68951fbd6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://mezovuduw.ru/award?keyword=evh+5150+iii+50+watt+manual PDF link annotation
    • http://fbdirect.site/stephen_king_movies_and_tv_shows_2020dr0k6.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/how_to_improve_emotional_regulation_child.pdfIn PDF document text
    • https://zunurevupuvofas.weebly.com/uploads/1/3/1/4/131438471/novudifek.pdfIn PDF document text
    • https://jedurabononip.weebly.com/uploads/1/3/1/4/131453193/gekuzupikunefopu.pdfIn PDF document text
    • http://dream-stat.ru/dayton_band_saw_blade_guidesxscl0.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/3529292.pdfIn PDF document text
    • http://kojibataruv.iblogger.org/merunojun.pdfIn PDF document text
    • http://raftgjgr.space/47523130562yabhz.pdfIn PDF document text
    • http://boribonabone.mypressonline.com/the_half_has_never_been_told.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/melebadujovu.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/ap_english_literature_question_3_sample_essays.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/sojebelevenex/51262145316.pdfIn PDF document text
    • http://xagexof.rf.gd/actemra_fda_prescribing_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/energy_storage_devices.pdfIn PDF document text
    • http://duxuvogavibu.epizy.com/dewalt_oscillating_tool_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/jupiter_gustav_holst_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/buffalo_car_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/64357900612.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/wivakaragunibibovegifez.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_off0000c5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BE 4732 bytes
SHA-256: 897eea7d00ae9be4e2a293f64e9cd7538c949ad2fda4e25a8122fb61a0e98b50
font_01_sfnt_off0000d5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BE 14508 bytes
SHA-256: b83840d597f9e4f8a968541f0c28855b57b374bb41ada0c43914f0d774bab3c2
font_02_sfnt_off00010392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10392 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34