Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af61912d8c67fd7…

MALICIOUS

PDF

74.4 KB Created: 2021-03-02 17:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0556d40744c978f319e9171edfd45863 SHA-1: 2f39dba41a3806e6e508515bd48b6dc8495d0283 SHA-256: 7af61912d8c67fd70b62abbb18dc1f7f6dc73cdda0a857e51db517f1e7ccc5dd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wb?keyword=wheel%20of%20time%20book%2015 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458840/normal_6006f9245953f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_603673d407237.pdfIn PDF document text
    • http://premiumpornclips.com/autocad_2013_manualx3iol.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/53013778875.pdfIn PDF document text
    • http://pagebake.com/56763619423pwtml.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/13974116370.pdfIn PDF document text
    • http://mscredit.info/que_tipos_de_comunicacion_verbal_existendj1bp.pdfIn PDF document text
    • http://temilops.xyz/reference_letter_doctor_templatecs8px.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387577/normal_5ff5a3980780f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376857/normal_5ff90ae29c603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392463/normal_5fded91aabb11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404512/normal_6019cc721946c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5ff2bba1162f5.pdfIn PDF document text
    • http://kudusakepupa.sportsontheweb.net/which_machine_learning_algorithm_is_best_for_text_classification.pdfIn PDF document text
    • http://fastpysystem.online/xizubukixxb7n1.pdfIn PDF document text
    • http://antileqphh.site/49236077805yvmjm.pdfIn PDF document text
    • http://tiwimifozukimu.medianewsonline.com/human_anatomy_and_physiology_lab_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/88461657307.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_off0000e8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BF 4916 bytes
SHA-256: 549dfaf3f8d6b332c44294a51c21d674627015df2522e003988c149f43f57649
font_01_sfnt_off0000f972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 10416 bytes
SHA-256: 278574a993d4729e232034caa8f762a953ad06d1b456bf9171f36662aecb77cd