Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3dfbe784bfa06f…

MALICIOUS

PDF

50.5 KB Created: 2020-08-17 18:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a5ad9b3fef0a3679110bee254716fac SHA-1: d6cef545dc889fa4b1b39c85726c71468f15db8a SHA-256: 6b3dfbe784bfa06f219051f1109852e0b3b9e53e4640ab4e5d22830e6d5aac23
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service known for hosting malicious content. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector. The primary attack vector appears to be a phishing lure, directing users to potentially harmful websites.

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=dbz+android+14+15 In PDF document text
    • http://files.arniebermudez.com/uploads/1/3/1/3/131379510/5cfea0d662.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/1/0428/8957/6601/files/47887698910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/lavosixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/philosophy_and_african_culture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9934/8373/files/cannot_download_album_from_photobucket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/termidor_he_safety_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3417/3859/files/character_development_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0873/5907/files/ignition_system_sinhala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/convert_dataframe_to_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2812/4572/files/pharmacology_for_anaesthesia_and_intensive_care.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/amylose_cardiaque.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/65761065032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/gefijebazuvuditineka.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAE 3540 bytes
SHA-256: b62ce9c0d09c3cdbb48786fe51410bbb293440a5fc0c6d07eb455f6c53b70511
font_01_sfnt_off00008842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8842 5064 bytes
SHA-256: 1d4dac6de07138ab13a60e871cc5ebfb226a966e30754b3a19428f3a44884e38
font_02_sfnt_off0000999a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999A 10308 bytes
SHA-256: d7ee9238dc7885bb935cb329f66f0ff48b319a0f6014c19893b072c127cefa1a

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