Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7685790256dc08…

MALICIOUS

PDF

32.0 KB Created: 2020-08-19 16:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad43240cf9e15810862700e33aa4bca0 SHA-1: e316847336dcb48e819cda821640fca18624334d SHA-256: 5c7685790256dc082958ae053c4dd7462b6d5c37748eaa07965ea96c48158357
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same redirector URL. The presence of a 'download button' lure and a large number of external PDF links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=banjo+trance+mix+dj+mandar+song In PDF document text
    • http://files.clucasart.com/uploads/1/3/0/9/130969655/susadugojaposegax.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/1/0434/6455/6710/files/bootstrap_dropdown_menu_not_working_on_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/xixun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/napavufomagorisin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/tijigujavoworaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9848/6424/files/jobanosidelupigofajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/46052714415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/gubotadagipasoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/16465261465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/69411369037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/maternal_and_child_health_care_services.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/6945/2967/files/inequality_word_problems_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/losazapivelodiwosaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/codex_alimentarius_standards_and_guidelines.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 2

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_off0000416b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x416B 5420 bytes
SHA-256: fcd4feff8c221adfd88555dd1369b2526c7e8afbdadb3a0c5e8d51e7897e1823
font_01_sfnt_off000053c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53C8 9240 bytes
SHA-256: 28699961053f759b6696f1101241e74235e93815e4b18b9998b309be3309fadd

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