Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0e44f05832fd82…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 01:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 324db858173ab88e7608504839d91fc8 SHA-1: b8086d6a74f6924647ff132603797e46a1ea2f1e SHA-256: 0d0e44f05832fd82fc54cc1b2d5d5cde488f8a7db33509d8d665096bce0563cf
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.com/pify?keyword=advantages+and+disadvantages+of+mixed+economy+system+pdf In PDF document text
    • http://files.brendaswenson.info/uploads/1/3/0/7/130775556/sumupat_bosujila_luvorexewoxugi_fonikemad.pdfIn PDF document text
    • http://files.susankraftconsulting.com/uploads/1/3/0/7/130776407/dinefat-fimeze.pdfIn PDF document text
    • http://files.wisefishworld.com/uploads/1/3/2/7/132712214/bopid.pdfIn PDF document text
    • http://files.mainewest.org/uploads/1/3/1/3/131380641/kokum_dakaxisidu_kuvajujod_pesexa.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/1/0431/8117/9037/files/44201735178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/lexanodapigawasegarobipud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/77158421224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/93328075306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9312/3491/files/65147830900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/66529004567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3648/2458/files/28148288718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/18406886395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7764/5974/files/pizokimadedog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/how_to_uninstall_world_of_warcraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/vishnu_sahasranamam_english.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_off00006501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6501 5564 bytes
SHA-256: 231065839d2701d66412f256c192728302046012d3cc1257bf2202ba0adb0a98
font_01_sfnt_off00007803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7803 10672 bytes
SHA-256: df4859af67e46856c0f378d16885aa11a1640a6a5027a9c469b9f97dcb695b8c

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