Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6ea8ac70e80ef0…

MALICIOUS

PDF

71.3 KB Created: 2021-02-24 01:25:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8191247ab384c0c2e9ffee890b53771d SHA-1: 122afcb0bf82a7a3261a186ff6448d1e2f5d6d79 SHA-256: 6b6ea8ac70e80ef02192d2225c24111db2dd40756e0b0ce9c88b3ff8081c0b66
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://baarspo.ru/wix?keyword=isit+2020+virtual PDF link annotation
    • http://gebajajax.22web.org/ramadan_calendar_2018_free.pdfIn PDF document text
    • https://cdn.sqhk.co/metumolalub/zietiLM/w3schools_php_video_tutorial.pdfIn PDF document text
    • https://wojaxesisitofem.weebly.com/uploads/1/3/4/7/134717171/ccd44791b6b076.pdfIn PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/ee00aa5.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/Yjjhbie/susiveke.pdfIn PDF document text
    • http://zunugopubudo.22web.org/project_budget_follow_up_template.pdfIn PDF document text
    • https://nisuwifa.weebly.com/uploads/1/3/1/4/131453943/nofemov.pdfIn PDF document text
    • https://nererudufujodu.weebly.com/uploads/1/3/4/3/134321338/2220858.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/egiQoib/fulogivezonifubodawuzod.pdfIn PDF document text
    • http://tebaxal.22web.org/rifoxutojuxomepeb.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/ijKjdgj/arcade_dragon_blaze.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/kiwopusafize/aakraman_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/22804360754.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/danio_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/analog_and_digital_electronics_notes_vtu.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/fexitawosofinepox.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/better_than_you_meaning_in_hindi.pdfIn PDF document text
    • http://topatux.rf.gd/zigepofize.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_off0000ddcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCF 4948 bytes
SHA-256: 78db829936d3bd5557a48e53608e327c1f37db53671030ef1c29c985d84539c4
font_01_sfnt_off0000eeb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB5 9944 bytes
SHA-256: fec528b12c976d2cd9c5d7edbb59a46f8dc21cfe18adfb1252495c0c5fd9b947