Malicious PDF — malware analysis report

Static analysis result for SHA-256 21462179e6e736f2…

MALICIOUS

PDF

40.3 KB Created: 2020-11-08 18:04:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f25d1f300bd6e6feefd267f3f7d99c4d SHA-1: 7f3c7974c207574915ba5b2fdcd71877c18f42b2 SHA-256: 21462179e6e736f2e192eecb6038af0d0e22fb0e0a86f3d1ba21a83241969e77
84 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/123?keyword=camera+next+mod+apk PDF link annotation
    • https://gurogujanesoxub.weebly.com/uploads/1/3/4/5/134506981/vexerafow_wodowukufake_polebutibi_fonutumelipi.pdfIn PDF document text
    • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/sizukesoz-zijowiribiwe-tuzapadafam.pdfIn PDF document text
    • https://vapesokon.weebly.com/uploads/1/3/4/3/134329795/2abb9.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/zosilat-wafipoka-velexuzalelakal.pdfIn PDF document text
    • https://kizuwapeputatu.weebly.com/uploads/1/3/4/3/134375201/16d4074c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5f945a715c71c.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/mitakajazum/captain_jack_and_the_face_of_boe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b6a27ec-5f78-404a-8af2-8e01310fd620/wezimute.pdfIn PDF document text
    • https://s3.amazonaws.com/zukukelejurotef/vishnu_sahasranamam_stotram_lyrics_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/votoxunamoroxa.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/63097843459.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/martin_logan_verse_soundbar_review.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/wenolewa.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/z_fighting_skyrim_se.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_off00005f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9F 4932 bytes
SHA-256: 0248118bb36269bf091170756f409dc4481ce1130707b093a088726bd6ecd122
font_01_sfnt_off00007050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7050 10732 bytes
SHA-256: 7680ccb11e123f72eb0aaa41f6e2247a8077974344baf4bf03977ab238340ef6