Malicious PDF — malware analysis report

Static analysis result for SHA-256 da59881a15dd2bdb…

MALICIOUS

PDF

68.9 KB Created: 2021-02-01 15:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 71b53390bacbed005a11418f87485eca SHA-1: 0d22c34dda875db75b37596e3a99dd8cbced85f6 SHA-256: da59881a15dd2bdbd79aaac4be15cda4f009ccf80dbd9ff4b85f52ad9e75e4cb
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/shook?utm_term=allegiant+stadium+seating+chart+with+seat+numbers In PDF document text
    • http://bilkaita.space/pavaziranarvick.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_5feaf7246359b.pdfIn PDF document text
    • http://nofovukad.iblogger.org/revobulexajafep.pdfIn PDF document text
    • http://alkostore.xyz/29093241599ixyzr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424347/normal_5fd6152c97a78.pdfIn PDF document text
    • https://sunapibabe.weebly.com/uploads/1/3/3/9/133999858/7add8465.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5fddbdc524ee8.pdfIn PDF document text
    • https://kukonugaxa.weebly.com/uploads/1/3/5/3/135327287/fevet.pdfIn PDF document text
    • https://najonetawo.weebly.com/uploads/1/3/4/5/134522785/zixoruwusa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vapasiwivomod.epizy.com/todugifoxipuxabagepaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/arrest_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/98050189299.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/numbered_answer_sheet_1-_100.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/polo_shirt_mockup_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/novijarozuzus.pdfIn PDF document text
    • http://zusewijoje.epizy.com/blank_business_card_template_coreldraw.pdfIn PDF document text
    • http://jukikusikodopom.epizy.com/47098960102.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/quiz_logo_game_answers_level_25.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_off0000cdbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDBF 5572 bytes
SHA-256: 299e9441a78cce67f7e2e23d9307fd04506bc7a06f277bf6f20c4082151f5492
font_01_sfnt_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 11224 bytes
SHA-256: ee24d7ce215108fe5898723aed9805bf8deda6b8b2fce1bdd0c694f70e047f63

Open this report in the interactive analyzer, or submit your own file for analysis.