Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3659673fc2444a…

MALICIOUS

PDF

40.2 KB Created: 2020-09-30 13:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c1f4b75074799ccd9a82b61c2cf5cfa3 SHA-1: 7f252b8bab848423d8238ce645da997e029789ce SHA-256: fd3659673fc2444a3b1730720fbe043030d14980589807cc0ea9acb68708467e
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=carreteras+secundarias+martinez+de+pison+pdf In PDF document text
    • http://files.lucieradcliffe.com/uploads/1/3/1/4/131406662/6656946.pdfIn PDF document text
    • http://files.glorytourssalalah.com/uploads/1/3/1/8/131856392/11416cf14.pdfIn PDF document text
    • http://files.amyrosemoore.com/uploads/1/3/1/4/131453573/417544.pdfIn PDF document text
    • http://files.seasonalshowers.com/uploads/1/3/2/6/132682615/jupizibud-wirunix.pdfIn PDF document text
    • http://files.albertaorff.ca/uploads/1/3/0/8/130873795/pulosaxevino-kavekalepan-jixawopokodaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/432daa6a-7362-4a4c-9abf-c13e6ada0ab1/26497987564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d123864-f4fd-475e-80c8-1d458e5f832f/simewuvopute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7354ab71-cb69-4747-a66e-08d0e26014dc/dibeweminelufuguwor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/westside_high_school_omaha_mascot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/43687732869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7950/5822/files/wakarozegivufonidoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/spiritual_warfare_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/worupovib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/onion_root_tip_mitosis_phases_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/24134032291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/2766201683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/patologi_anatomi_robbins.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D23 5224 bytes
SHA-256: b87d813553b455242c9328dad6335dff4f287ce2ea40119c14b227291d594a98
font_01_sfnt_off00006ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED6 10584 bytes
SHA-256: e6a3e17de02053f6607f76023f41209a23b3955c3ca7c30dc6d3942d4fe6644c

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