Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace630b470bdd388…

MALICIOUS

PDF

71.1 KB Created: 2021-02-15 15:04:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c667ad59ab9c3f287b7c2400740e2c1b SHA-1: 66322790eaa46f992c91724d28f4836b16a8edfb SHA-256: ace630b470bdd388ab90a11cc37cf7dd9077e8cf79039861e3fc6157005968cf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=john+kehoe+mind+power+pdf PDF link annotation
    • https://xefafarorul.weebly.com/uploads/1/3/4/6/134698093/3343540.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383451/normal_5fc639ffcd16e.pdfIn PDF document text
    • https://wakejowedab.weebly.com/uploads/1/3/4/5/134599651/3055261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460678/normal_5fdbd6dcd6681.pdfIn PDF document text
    • https://wuwenesugujiku.weebly.com/uploads/1/3/0/7/130739695/kukokufi.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/bTfWNhg/pb_j_sandwich_while_pregnant.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486775/normal_5fc9098589364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419836/normal_5ff49a086c9ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wepirizifomonij.epizy.com/rukulavexagoxavelil.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/gmail_new_account_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/scream_3_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/27205474180.pdfIn PDF document text
    • http://dosatetirudipu.epizy.com/balewadi_bus_naa_songs_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/jimoled.pdfIn PDF document text
    • http://voxonirejeze.epizy.com/free_flowchart_template_online.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_off0000db83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB83 5008 bytes
SHA-256: 46e2780736aedbd2db980e8d7c310942460dc363f533baa6eac8973bc0f8fa25
font_01_sfnt_off0000ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC75 10380 bytes
SHA-256: 4660a8e5d3f3dfec02a9103195e46a883a8677b17d0f84e36a424744d504e181