Malicious PDF — malware analysis report

Static analysis result for SHA-256 502ba30226c29f87…

MALICIOUS

PDF

42.7 KB Created: 2020-11-08 03:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 41f5b61f3cf1c040aff88a8bf9263501 SHA-1: f653fe7e3e4815dc0de39c30b7c7aa5935a9cef4 SHA-256: 502ba30226c29f87d82adb9baf0a47b364853a0acf58a0bb86526da7785adc87
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?keyword=summoners+war+ancient+magic+shop In PDF document text
    • https://wenakewijota.weebly.com/uploads/1/3/4/6/134611788/godasogufasuxeki.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/38ea02db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/jonomuzajezakawewu.pdfIn PDF document text
    • https://xisevijako.files.wordpress.com/2020/11/zuluw.pdfIn PDF document text
    • https://fafutuk.files.wordpress.com/2020/11/movie_a_quiet_place.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://jogiwubenux.files.wordpress.com/2020/11/15021226969.pdfIn PDF document text
    • https://vetejijis.files.wordpress.com/2020/11/37430524209.pdfIn PDF document text
    • https://segokaguwun.files.wordpress.com/2020/11/fuzoxesageruvorokikotur.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://tumitom.files.wordpress.com/2020/11/wovibidel.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/93799704797.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5060 5508 bytes
SHA-256: ba149619024bd380a6991272484e3382603c401a057c564a1c5c03c8b2414a52
font_01_sfnt_off000062fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 10932 bytes
SHA-256: a1a7a385db43032d08212dcd4aa12b989316e2f2336b5afaa666a67de15d3cbd
font_02_sfnt_off0000888d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888D 16220 bytes
SHA-256: 3a5914faaaaae7d046a24793895927255cbf7dd6661ca39b2c37caeaecf7508a

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