Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14a2b6d2d14ecb2…

MALICIOUS

PDF

71.6 KB Created: 2021-02-28 13:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dd1e1a8c1d7c6324b30ff0e0d5e96b95 SHA-1: b7d636dc3cda7a12b0c5d91bb8eef25da8d41747 SHA-256: d14a2b6d2d14ecb2453284b43d5cce2c462021b0ccd383b97109bcf27b8c570e
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://jottigo.ru/wix?keyword=the+great+gatsby+mp4+free+download PDF link annotation
    • http://pimamunoper.iblogger.org/66805557750.pdfIn PDF document text
    • https://loxazubak.weebly.com/uploads/1/3/0/7/130739809/pedomaluza-wemerosik-kegevokuv-vuwanimojilujes.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/jason_scully_grapplers_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447884/normal_5ff0eb987cea5.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/bulolimepol/easy_halloween_carving_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/mekamojo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/how_to_enter_family_feud_canada.pdfIn PDF document text
    • http://xuperag.epizy.com/fisiopatologia_de_aneurisma_cerebral.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/ariston_armf125_dryer_manual.pdfIn PDF document text
    • http://mofuvuziwoloj.epizy.com/gazabaxod.pdfIn PDF document text
    • http://pagikojezokatu.rf.gd/vojigazezumubuxunusexelik.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/19765391692.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/derubar.pdfIn PDF document text
    • http://zopuraxikesu.epizy.com/76825837701.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/47070771581.pdfIn PDF document text
    • http://wasutin.epizy.com/87832470532.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_off0000db6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6E 5828 bytes
SHA-256: 8de8ba80f674439d34ab4e74811052cb3847f0543ffb3a6e53406a5f7b71b374
font_01_sfnt_off0000ef34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF34 9928 bytes
SHA-256: c9749c29f8bd91bcbbbff7f12313b25236bac5abbe89933216341b0bd78b1811