Malicious PDF — malware analysis report

Static analysis result for SHA-256 80113c7639ba7caf…

MALICIOUS

PDF

72.1 KB Created: 2021-02-20 13:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c24c4d960b76587bdd5d6542741e9a0a SHA-1: c05b9d64ecb611161fbd46d282e8f0c514469f3a SHA-256: 80113c7639ba7cafa5b590811b2e75bfe38f804131b6e44ebaf3e4c51f0f4ca1
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://jottigo.ru/wix?keyword=supernatural+protection+sigils PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368736/normal_6012279e154fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389582/normal_5feed40bdd5dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413968/normal_6005d5ff6a356.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/Yhijual/61070710144.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/dZYepgc/61734309852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490918/normal_6011493c14241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_601be45c54403.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426822/normal_5fe2abb72e0f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_60039ad220517.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370764/normal_5fdf93ee50654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408996/normal_601e5a2120703.pdfIn PDF document text
    • http://kowezuzapine.66ghz.com/tagit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445118/normal_5ffd7e682b7d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ripeterub.epizy.com/avocado_smoothie_nutrition_information.pdfIn PDF document text
    • http://levurugagizov.rf.gd/information_overload_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/17848988444.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/transformer_surge_arrester_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/13204077721.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_off0000de6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6F 5204 bytes
SHA-256: 2921f0c1e2b3d6172a63edd767814aff502562379ab4ad0bb6213d633070b5cb
font_01_sfnt_off0000f02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02A 10384 bytes
SHA-256: 2bc775feaf7838aef3417cf3476a76a58ef6555f87fa1b1cdf7f42b0b2df695d