Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f63c48adda8a1c…

MALICIOUS

PDF

69.9 KB Created: 2021-02-21 06:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a34bb31626ec20af9394087be1a205af SHA-1: f4df62a2727b23d2e8e85dcefc4d3a69fc074907 SHA-256: 86f63c48adda8a1cc7c776bda4e19dead35e6bd6c137ea67f33057df9f013ef7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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/wix?keyword=plant+versus+zombies+heroes+mod+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421042/normal_6029ef2c97785.pdfIn PDF document text
    • http://gutowofobujibos.iblogger.org/77518385229.pdfIn PDF document text
    • http://praktika-ingenieur.com/shooter_lube_discount_code0bydr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473616/normal_5ff78f9699b5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378846/normal_5ff9426d65ef9.pdfIn PDF document text
    • http://bekavukida.22web.org/function_notation_and_evaluating_functions_practice_worksheet_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420239/normal_5fdd33db717bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446170/normal_5fe24ba438ac1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464052/normal_5ff7a1a23ba70.pdfIn PDF document text
    • http://albatros-trans.ru/talking_tom_jetski_2_game_downloadl684h.pdfIn PDF document text
    • http://makeyourself.xyz/wikimezibokicb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385214/normal_5fcf27d085f0b.pdfIn PDF document text
    • http://onesmall.space/ganamrutha_bodhini_english_book_free_downloadlcjdb.pdfIn PDF document text
    • http://housefashion.ru/pl_sql_tutorial_w3schools_download4tvwq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_601e8d5776a97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427093/normal_5ffb307eee402.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/bikikanafopavu/27338538308.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/hakuba_valley_japan_snow_report.pdfIn PDF document text
    • http://kafuxipadirates.rf.gd/kingdom_choir_performance_at_royal_wedding.pdfIn PDF document text
    • http://pekotezubefem.rf.gd/xugufamive.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/10838181271.pdfIn PDF document text
    • http://tokavasetalan.epizy.com/70089919638.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_off0000d4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F5 5516 bytes
SHA-256: 40d0c2ba06efddf6a06d092080c57574fa68552aff5ac8b0ee21aabe4fc0c2d5
font_01_sfnt_off0000e78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78E 10128 bytes
SHA-256: c0a9fc4ea9eddd6236411c572cc21b0da9ec1f0d3e4b0cdac3761b3ca587494a