Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69df74df1477859…

MALICIOUS

PDF

48.4 KB Created: 2020-10-25 11:06:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-18
MD5: e4cf173149ece2de72d72da95fb82687 SHA-1: 51dc71ad4ee0d67796c0517265c182240197576a SHA-256: d69df74df1477859e3e265efe881ba72846b9c328deeabcaff3422dd359285ae
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/aws?keyword=information+systems+literacy+definition+pdf In PDF document text
    • https://rixokofumi.weebly.com/uploads/1/3/1/3/131380985/3208406.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/4b836f7704cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4459/7671/files/wisconsin_child_care_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9856/8378/files/folam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/la_mafia_medicale_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8945/files/audio_technica_ath-m20x_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2010/4092/files/bemazujepop.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/evanescence_my_immortal_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/83395686817.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/poraxovalozibukedomiza.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/mastering_metrics_chapter_3.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/sipibuturulaxezoxaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/corporate_finance_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1211/2551/files/20627049330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/dolby_atmos_android_9_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/file_explorer_pro_apk_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/materiales_dentales_propiedades_y_manipulacion_craig.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/37379227410.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/mcdonalds_menu_prices_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/nufatemedaninojajebifuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8920/files/vikuxutivewofafarepopuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/walking_dead_episode_guide_season_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4629/7511/files/17867341589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2735/6577/files/geruxukirikogobitikuwinig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7239 5128 bytes
SHA-256: 6dee2f0718bf89eb8a3aa48d759c40aa71c0713bc77d02ccdb98a6e25e27ac21
font_01_sfnt_off00008390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8390 9800 bytes
SHA-256: ea6fbda66dee5d6380112f9499e734f5f57956e717ea2ed98f0f12ec7c47a9d4
font_02_sfnt_off0000a52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA52E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361