Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ee9a4a553f7e3f…

MALICIOUS

PDF

66.9 KB Created: 2021-02-10 17:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 18defbe00df710634c907d9063fb7604 SHA-1: 0ae0a241c7614b78f4d1c03b39288ac6bee9657c SHA-256: 37ee9a4a553f7e3f1d9bea2b0dafaef66c659767f0a33c0d760951f5f0c90b31
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wb?keyword=best%20marketing%20social%20media%20platforms PDF link annotation
    • http://callipakk2.site/31367620545zclhl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468274/normal_6002f6b2a0506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412570/normal_5ff8cdad8c6e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5fdaba4aa5e7a.pdfIn PDF document text
    • http://zdorovienashevse.xyz/bunuvafurekonotunorabezvua4.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/experience_certificate_sample_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/85976705085.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/blackberry_bold_9700_softwareaf9wn.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/imf_report_iran.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/chrysler_sebring_2006_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/argonautiche_valerio_flacco.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/datemovipa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5fc729d79b5a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalilom.epizy.com/c_collections_interview_questions_and_answers.pdfIn PDF document text
    • http://bedegotix.epizy.com/84004690687.pdfIn PDF document text
    • http://ximogubofew.epizy.com/good_food_guide_2020_awards.pdfIn PDF document text
    • http://faxogego.epizy.com/girl_scout_way_badge_requirements.pdfIn PDF document text
    • http://joriboka.epizy.com/flubs_crossword_answer.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_off0000ca0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0E 5588 bytes
SHA-256: 1c2a2c45a6341d4851afa23650f71a245e387fdeb54d01f785cc4b11bd3f246e
font_01_sfnt_off0000dcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFC 9832 bytes
SHA-256: 1717f05a1c2732bbc9c8e5bd94ac995bfd74f4aa0ae29ae3a5aedecf346b7636