Malicious PDF — malware analysis report

Static analysis result for SHA-256 3444602b550e2a6e…

MALICIOUS

PDF

62.7 KB Created: 2021-02-20 00:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 00e29c9db7cabaab315cf494975e8891 SHA-1: c36fcfa136293b2394d7cdb0dae16b5a336e0ba8 SHA-256: 3444602b550e2a6e73bd45eb8d72f399b3892b6ed79e827df7759a724204323e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=is%2016personalities%20safe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425908/normal_601868d6dcc1e.pdfIn PDF document text
    • https://cdn.sqhk.co/sarafogu/VhghhOF/23136836891.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/hUjagdj/sonic_riders_zero_gravity_pcsx2_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/VjBdJTl/92191340424.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/hqhcNhi/the_vocal_coach_apk.pdfIn PDF document text
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/b7ad7eb.pdfIn PDF document text
    • https://bebujufexuxiki.weebly.com/uploads/1/3/4/6/134624407/morodozikirezonitupa.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/vjaogi3/50435404614.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/ijAjbBz/45211352736.pdfIn PDF document text
    • https://xexigajusotojuz.weebly.com/uploads/1/3/1/6/131606060/4485802.pdfIn PDF document text
    • https://nipifofopofeduv.weebly.com/uploads/1/3/4/3/134338269/3211218.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/kitakilesa/54626917047.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/new_south_movie_2018_love_story.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/aagadu_audio_songs_com.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/bayliner_capri_1850_manual.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_off0000ba70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA70 5040 bytes
SHA-256: f32061b378a535d8cc626263f3530327e4f5512e55c733c5d6b9848d21357d94
font_01_sfnt_off0000cba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA8 10112 bytes
SHA-256: 0c05bf03fb5c8dd507428c225c45a29c7074e8877dc9fba6666f190bd2153f81