Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d42f4fa8ba7e85b…

MALICIOUS

PDF

46.7 KB Created: 2020-08-17 15:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 505e57dbfa8dcf83a061e218d4f165d2 SHA-1: f85e5e014df016e9908a382961bcd0aaa457f1ab SHA-256: 5d42f4fa8ba7e85bb3e75966c25c5c36dadcd513188de88e30364fa37c65a0e5
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as educational resources, but the primary link redirects to a known malicious redirector. This indicates a phishing or scam attempt, likely using the document as a lure to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

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.ru/pify?keyword=civic+education+curriculum+in+nigeria+pdf In PDF document text
    • http://files.lifebuilderstc.com/uploads/1/3/0/7/130776656/920650.pdfIn PDF document text
    • http://mazunew.ghostentertainmentct.com/uploads/1/3/2/7/132740564/bujipisevof_sopusa_jabilo_vuronaruvat.pdfIn PDF document text
    • http://files.playsport-usa.com/uploads/1/3/0/8/130814397/piruvitewomilis.pdfIn PDF document text
    • http://files.lightonthedesert.org/uploads/1/3/1/3/131379844/tarerogal.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/1/0433/0687/7080/files/26225030347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/bepoferexumojodunobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/tratamiento_de_aneurisma_de_aorta_abdominal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/descargar_astro_file_manager_pro_apk_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/tujako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/flash_animation_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/51378932123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/71448290717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/bharat_acharya_microprocessor_8085.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 4

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_off00007a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3C 5260 bytes
SHA-256: 5c62d2eccd7ec59ca9085609e53f8c46685efed2a402d91659f95a0294033e4c
font_01_sfnt_off00008c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C07 9916 bytes
SHA-256: 34591f3617ceb88f5ac58bb3e7c464101a14e07f698774a6ee8c1e8ccad0f837

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