Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df3d99da9dad3c9…

MALICIOUS

PDF

69.6 KB Created: 2021-01-31 17:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0979ff3cfca04ce99e020607d67d2778 SHA-1: 23c7c6bca8767cf1592c0c1d654f76da4690b640 SHA-256: 9df3d99da9dad3c9faba5cdbed339a0240831e184035ae5b6fbfb766be579534
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://bologen.ru/123?utm_term=us+navy+creed PDF link annotation
    • http://bazazodagipaju.22web.org/non-_uniform_motion_lab_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485446/normal_5fd6e36be85a9.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/formal_and_informal_writing_exerciseslvfrk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451027/normal_6015c86fe47eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe272c5cb68b.pdfIn PDF document text
    • http://medugogubi.22web.org/inference_worksheets_high_school.pdfIn PDF document text
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/6cbea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409405/normal_5fda2f81df010.pdfIn PDF document text
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/9651377.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/vajoxufo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369659/normal_5fcb186699fe3.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/bubodeliza/36502791122.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/disonububufukokaz.pdfIn PDF document text
    • http://wasamatebupo.rf.gd/tft_9._18_item_cheat_sheet.pdfIn PDF document text
    • http://fonugaxow.epizy.com/kelim.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/kozexaxelepuxub.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/muzaxovojo.pdfIn PDF document text
    • http://bumumewevebav.epizy.com/fifabapuj.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_off0000d23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23C 5052 bytes
SHA-256: 8a00c28a3746331a39c45685edf3b97b6b459e1c5073a06d572bca219683a901
font_01_sfnt_off0000e388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE388 11172 bytes
SHA-256: 4e5061ef42b42f3236535aae4948622a7cebc903a81c1597e62aa2148ab070c9