Malicious PDF — malware analysis report

Static analysis result for SHA-256 2871100fbb402cf9…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 19:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7e67a70b903500e371966ac26787caf SHA-1: 52c36d8a203db6f65ca3f16de4ea430a4fe3a4aa SHA-256: 2871100fbb402cf95913f08f11c3551c94a7a7f12f5c7342ae3ad2d0d378881c
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://dugedepap.ru/award?keyword=care+touch+blood+pressure+monitor+accuracy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408483/normal_601bf92489cef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368976/normal_5fcc07cec3870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_6010936884e08.pdfIn PDF document text
    • http://begemotiks.fun/pokemon_vega_all_cheats7kln2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402717/normal_5fc9b1d48baef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5fd626f7d4c14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382793/normal_5fec14ccd5df7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_60060a974f4d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370740/normal_5fec16c3a22cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466173/normal_60293cda3486b.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/dowesitobuga/12392518106.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/what_do_you_pray_when_someone_dies_in_islam.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/josumevi.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/smoke_patch_for_pes_2016_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/pedicab_driver_1989_full_movie.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_off0000e401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE401 5460 bytes
SHA-256: 6bfd54bdd9b5bcddaa234c9b7b25144ce2f3e7f65c80147809ccf6794b77a019
font_01_sfnt_off0000f662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF662 10332 bytes
SHA-256: 7e2b54e8f3a90b17d57b68d5a0c6adf08cb4ad7a7c2a3bd92f2f7cb7ba8bedcf