Malicious PDF — malware analysis report

Static analysis result for SHA-256 e015efec472280cd…

MALICIOUS

PDF

42.4 KB Created: 2020-11-08 14:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: fbe22266ca4fce413b30225a2df97b32 SHA-1: 35126d6d9e73d3dff043fca59e5fa49e249e839b SHA-256: e015efec472280cd55617c123998e85f6cae1dbfb5fcac4eb38f2c8fcc31f8a9
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://traffine.ru/123?keyword=honolulu+wind+ensemble+2018+performances In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/kagejosuwu-bufegolofajog-pujefadu.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/bikabobej_venutus_binokitel_mudejezepoju.pdfIn PDF document text
    • https://joxiwawetesamiv.weebly.com/uploads/1/3/4/3/134306419/zurijim-nerupukove.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pokagiriti.files.wordpress.com/2020/11/ccs_c_compiler_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/5e_shield_of_faith_stack.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/definicion_de_parasomnias.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/clash_of_the_lightsabers_card_game.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/factors_affecting_demand_in_economics.pdfIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/arduino_beginners_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/43816463177.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/missouri_judges_ratings.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/numovevotud.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_off00006213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6213 6012 bytes
SHA-256: 705ffb8ae98635ec7bbc1112677806b934229c7efcfe0c3830d84ed966f79ac3
font_01_sfnt_off00007685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 11012 bytes
SHA-256: 0d75b601e922a8f71f2194cbac6f85499d754151e1efe48867f0f6ab6e2514e5