Malicious PDF — malware analysis report

Static analysis result for SHA-256 d754d31edc7e27f0…

MALICIOUS

PDF

59.7 KB Created: 2021-02-19 11:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 73f1dc5a8fe3b0918c0390a95a73d9bf SHA-1: ff49cbd3da635dba7ea722c7c3782cf7a861fd6c SHA-256: d754d31edc7e27f006bcd3d5d9dcf093ac3a7181fc8a57712422ffd0b15e5e6f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=mi%20planta%20de%20naranja%20lima%20libro%20completo%20word PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426423/normal_5fe5aa6e41807.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463533/normal_5ff23451008d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_6023bc50db659.pdfIn PDF document text
    • https://cdn.sqhk.co/zanivuwiduvo/gg1idhc/lajibipizogozirilanavat.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/gTldNyD/legion_td_guide_wc3.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/jahcFhd/cod_modern_warfare_store_tracker.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/jfhfvif/royal_chaos_banquet_outfits.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/gLjaRhi/snapseed_photo_editing_tutorial.pdfIn PDF document text
    • https://xoduwotef.weebly.com/uploads/1/3/5/3/135328954/jikobikixugowilaret.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/perurulexi/77105223539.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/educating_psyche_reading_passage_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/38490620642.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/cat_ki_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/rinunepofuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/46886189114.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/we_are_the_chosen_generation_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/clase_cestodos.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/disbelief_papyrus_unitale.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_off0000afa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA6 5356 bytes
SHA-256: f485220f674961b0070305c810e88486f10ec7ee03fad7e809eab50f7dd32151
font_01_sfnt_off0000c1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D8 9356 bytes
SHA-256: d47ef87322c344a03c51d3e444ce977ac4a11cd213b69890d337b39df94ff1a2

Open this report in the interactive analyzer, or submit your own file for analysis.