Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2cff1a22f92c97b…

MALICIOUS

PDF

73.6 KB Created: 2021-03-03 00:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 54e1ff1291b4fede1dfa2bed726e7f10 SHA-1: 442b52709722c4980a87c884f5db8bf9abfa2379 SHA-256: a2cff1a22f92c97b3fdbc50118dc102ecad21d2541a7c7479f8d021f17e19337
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/award?keyword=what+is+30+under+30+list PDF link annotation
    • http://lomidal.mygamesonline.org/convertidor_de_gramos_a_mililitros_online.pdfIn PDF document text
    • http://blognews.top/bexigivedovevonelomirav2pkrn.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/78335793616.pdfIn PDF document text
    • http://sibuvre.com/anonymous_free_vpn_for_firefox9ut8v.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/belawejarigakoxunukugj7pkf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://resilasijajatil.myartsonline.com/wubupade.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/10071824310.pdfIn PDF document text
    • http://sedoguzod.rf.gd/71195232085.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/bollywood_movie_barsaat_2005_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/larry_clark_tulsa_teenage_lust.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/best_online_organic_chemistry_teacher.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/cahier_de_texte.pdfIn PDF document text
    • http://povalimokuwov.rf.gd/78910217314.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/1775584215.pdfIn PDF document text
    • http://fadezanunadafik.myartsonline.com/nerabekinub.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/my_amityville_horror_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/movie_ki_duniya_hollywood_movie.pdfIn PDF document text
    • http://potokuxa.epizy.com/aaa_logo_5_full_crack.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_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 5232 bytes
SHA-256: 24522ed3b0835b97e1f26ea689e54b78ca716a071ba5127b2cb15bae8047d1fc
font_01_sfnt_off0000f599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF599 10476 bytes
SHA-256: cfecc0937d46c2c34a6687e63a4bcaef04944480b27b6053e4da63acb48317f6