Malicious PDF — malware analysis report

Static analysis result for SHA-256 daccc58a36510ab5…

MALICIOUS

PDF

59.6 KB Created: 2020-10-02 21:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b0c34f535531cf60f1ab67134a49b448 SHA-1: e7ea65bf3b9f0c50cd609a8a132525bd39c0c0ef SHA-256: daccc58a36510ab5d5d3a493f138dd6c59e154b3b0a3f8576ca9164ba81a5273
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://cctraff.ru/strik?keyword=the+maze+runner+2+full+movie+in+hindi+download+filmyzilla In PDF document text
    • http://files.bandgfrenchies.com/uploads/1/3/1/4/131454733/saduko.pdfIn PDF document text
    • http://files.thepamperedpuss.com/uploads/1/3/0/7/130739983/wurapexoxuzamu.pdfIn PDF document text
    • http://noxeka.khja.org/uploads/1/3/0/8/130813651/9279424.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4311/0302/files/all_aboard_games_kamloops.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/ascend_12t_kayak_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/59381691657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0008/4126/files/nc_power_of_attorney_form_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4906/9991/files/12270226833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6081/7820/files/a_civil_action_movie_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2756/3164/files/lanetid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1192/6948/files/the_child_psychotherapy_treatment_planner_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1345/8078/files/4673929939.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_off00006c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 15812 bytes
SHA-256: 5c3afcae35b9bcc6a223937cd9ce6e5f76f685560a8480715f8a848aa42e95a5
font_01_sfnt_off00009eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB3 5356 bytes
SHA-256: edf56d6540738df568c25958e331a82a311ac7a02151820674ea0f9942ef939d
font_02_sfnt_off0000b0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E3 15376 bytes
SHA-256: ba5a4aa46d5e921ee6fe6f4ade1a8a5816caeb41cdecdcb221b2bcc4aebb82c1