Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45f56b2752f4d8e…

MALICIOUS

PDF

73.0 KB Created: 2021-02-23 22:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 091ab42742514301681ebeec1d1f9a04 SHA-1: a2b4f5ec705012ac8193d80711dfcd518618f26b SHA-256: c45f56b2752f4d8ec7f3d89ccce60ba6c9e0dc29f3f16b7b3bbcb0d4fdb1180b
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://leonvi.ru/wix?keyword=esl+giving+instructions+worksheet+pdf PDF link annotation
    • https://luzatewuxajexi.weebly.com/uploads/1/3/4/2/134265782/b553e983894b.pdfIn PDF document text
    • https://vowexigap.weebly.com/uploads/1/3/1/6/131636774/jerorajuraxana.pdfIn PDF document text
    • https://kemigaguni.weebly.com/uploads/1/3/1/0/131070112/13a842339c3639.pdfIn PDF document text
    • https://kusonanozeko.weebly.com/uploads/1/3/0/7/130775507/dumuzikiwudexu.pdfIn PDF document text
    • https://pelunukemuf.weebly.com/uploads/1/3/0/7/130776607/7992961.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/2702554.pdfIn PDF document text
    • http://pebimubegema.22web.org/vaniwojabajibonupakaned.pdfIn PDF document text
    • http://jozarizotugi.22web.org/bardar_university_student_information.pdfIn PDF document text
    • https://mazaxijav.weebly.com/uploads/1/3/4/4/134488449/nurabok_femim_surajiximupol_boxogiroxo.pdfIn PDF document text
    • https://mutakisutuw.weebly.com/uploads/1/3/4/7/134768563/godopijokomipel_jizetoso_ronubunoma.pdfIn PDF document text
    • http://mail-autoscout24.net/82257436153a43e1.pdfIn PDF document text
    • https://bodujifoji.weebly.com/uploads/1/3/5/3/135394102/02fa675d30f6dc1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remavuj/pusudosademi.pdfIn PDF document text
    • http://tifoxirekurox.epizy.com/minizulezufarisaje.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/taxofigijapenomipex.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/messenger_platform_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/fokeg.pdfIn PDF document text
    • http://ganusigesu.rf.gd/time_to_file_answer_to_complaint_pennsylvania.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_off0000e04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 5380 bytes
SHA-256: 8fffc4a8c5bdf8a96353f01ba7a406506d303560e1a43c6d90f8c6706569308f
font_01_sfnt_off0000f2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BD 10780 bytes
SHA-256: 7fdb948a50aad091d5e8c378e11e74afca1d030a03a8ae2c41c38ddb6e12aeb9

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