Malicious PDF — malware analysis report

Static analysis result for SHA-256 4783501e125bb8d2…

MALICIOUS

PDF

36.6 KB Created: 2020-10-11 08:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: bfee80b1a9126912f4b5fa22d52d3629 SHA-1: af2eadb6fabb29e5accc5f7d6682c471a2d12094 SHA-256: 4783501e125bb8d271f659086076a9adbcd4d518f9d9e8c1a054fc1f7115e1e2
234 Risk Score

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://gettraff.ru/strik?keyword=sa%25C4%259Flam+indir+crysis In PDF document text
    • http://files.ivanyiuphoto.com/uploads/1/3/1/4/131437671/sirimekipenodipelawo.pdfIn PDF document text
    • http://zasijez.worldvision.com.sg/uploads/1/3/1/0/131070786/nosudibigav_fudob.pdfIn PDF document text
    • http://files.couturecobblerdesign.com/uploads/1/3/1/3/131381706/965434.pdfIn PDF document text
    • https://site-1039775.mozfiles.com/files/1039775/gexovulazofozusuvasani.pdfIn PDF document text
    • https://site-1038365.mozfiles.com/files/1038365/duvozoja.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/1/0483/4485/8787/files/blood_type_inheritance_problems_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6875/1523/files/nitro_tv_pro_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3571/6503/files/35496789544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7342/9661/files/supewegutesuvarobozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9941/7504/files/earmark_definition_ap_gov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8899/3703/files/la_fitness_class_schedule_richfield.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0987/5873/files/mcculloch_chainsaw_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9980/7651/files/78272210252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/88048509577.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_off00004d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D85 5520 bytes
SHA-256: 3e1f73a944ab8867e3c495f0920aed118d66b9a36a9689db6f9092d7ca0284c3
font_01_sfnt_off0000602b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602B 11488 bytes
SHA-256: 1a1653c71b320ff17dc5af105cbf569f3e103e3c0bfc20b790f5a1a6512a4cc5

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