Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1fc784aa0a3ec6d…

MALICIOUS

PDF

84.1 KB Created: 2021-02-24 06:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01b85352a9ab5a120689b526a1c86a21 SHA-1: 44516f0025b4ed26c51a6c1a99e08443e8cdb628 SHA-256: a1fc784aa0a3ec6d55d3b5f9f93e3ced206ca301ec93e0644080f3db6677f56a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=skyrim+optimal+load+order PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fc5c0008f65c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367275/normal_5fded83d21d0b.pdfIn PDF document text
    • http://shop-onlinediscount.xyz/the_parker_inheritance_book_review71q46.pdfIn PDF document text
    • http://tlgfree.xyz/aromatherapy_essential_oil_recipes01729.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417809/normal_5fe600a422498.pdfIn PDF document text
    • http://8gusevshop.website/1282210403oj9zx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fde55841a6e4.pdfIn PDF document text
    • https://cdn.sqhk.co/retepisej/ib0hbbe/30044779567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403689/normal_5fc577428446e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_602c4ed9eaece.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jupetovujek.epizy.com/donkey_kong_country_wiki_guide.pdfIn PDF document text
    • http://bemijeranokawu.epizy.com/13332454960.pdfIn PDF document text
    • http://nizapowedasa.rf.gd/bidesiya_bhojpuri_film_song.pdfIn PDF document text
    • http://mubomapobe.epizy.com/51434729919.pdfIn PDF document text
    • http://dipumekamerara.rf.gd/hunter_shadowlands_dps_rotation.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_off00010a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A80 5196 bytes
SHA-256: 09d49ef452b49fd009c9613ee578ebd8f124e0b95c6741d7f68400fcef7a647b
font_01_sfnt_off00011c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C21 11748 bytes
SHA-256: 4169a671d17095a93970d1ecadfa916218a95b0aec8facf1c7102a314fb74a6b