Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e3dbb0353232e0…

MALICIOUS

PDF

70.0 KB Created: 2021-01-25 01:37:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae4a5cef1aba40a21cc9d91816134627 SHA-1: 1dbcbe136a7961ff17f193ae6a73198e7d7a71e8 SHA-256: 92e3dbb0353232e095a16124295c38309c21eef6ed901c30a37677ae9f052c52
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/aws?utm_term=data+table+design+and+practice+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417990/normal_5ffe41495b603.pdfIn PDF document text
    • http://rumagadoli.22web.org/lebikorefinipoxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485152/normal_5fe06b5888e09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491673/normal_5ff5be1d71f1f.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/kiguteperilodu/street_fighter_full_movie.pdfIn PDF document text
    • http://vonupov.epizy.com/iv_calculations_practice_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/medical_slides_templates_free.pdfIn PDF document text
    • http://nidudovuj.epizy.com/dowuzabidivexurujawubob.pdfIn PDF document text
    • http://tirinito.epizy.com/nazagana.pdfIn PDF document text
    • http://vebaxabono.epizy.com/migifejefuzatomiwaxava.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/bo_staff_forms.pdfIn PDF document text
    • http://ruguwusizomu.epizy.com/vebewotufesuxavanapazijuf.pdfIn PDF document text
    • http://sozogakuvigoxev.epizy.com/aafco_feed_labeling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/loxobi.pdfIn PDF document text
    • http://kudawugijamino.rf.gd/7553985848.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_off0000d56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 5472 bytes
SHA-256: f80d148fbca99c9a7ef777efaf3bbe7d8ea376de08ee7264222be3a511a7c11a
font_01_sfnt_off0000e826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE826 10324 bytes
SHA-256: edcf4e704eb56e39cc0a96d2db36d063090156c7ce3d75e253b9b745cee06aea