Malicious PDF — malware analysis report

Static analysis result for SHA-256 53038280af903368…

MALICIOUS

PDF

82.0 KB Created: 2021-03-02 04:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7f62133ece483665ec37aa709d1fbf6d SHA-1: 9d68db94c13863888f3e9c4da47c4add8a0ffa51 SHA-256: 53038280af903368bfd74c3a1c295a54d8eb5c3d3efabbb9f0a314272cd61be3
196 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
  • 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.
  • 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://fokemale.ru/wix?keyword=ap+human+geography+exam+2020+study+guide PDF link annotation
    • http://sefajoga.iblogger.org/what_is_the_weather_report_in_chennai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_602fdd71c5c00.pdfIn PDF document text
    • https://mupimafab.weebly.com/uploads/1/3/4/7/134728659/6831060.pdfIn PDF document text
    • https://vinibakuru.weebly.com/uploads/1/3/4/3/134310820/nevulokewovobewiwod.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/xivatatebet_kedelapuneraz_lamufikofikinit.pdfIn PDF document text
    • https://remurefovedelag.weebly.com/uploads/1/3/1/8/131860204/d0af28bc6dc.pdfIn PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/287606.pdfIn PDF document text
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/xevilasumiwozixifa.pdfIn PDF document text
    • https://vinosubolab.weebly.com/uploads/1/3/5/3/135316207/goxomori_tubep.pdfIn PDF document text
    • http://tigesonepovar.66ghz.com/programa_de_gobierno_partido_nacional.pdfIn PDF document text
    • https://joxureduragup.weebly.com/uploads/1/3/0/8/130874613/6272742.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/xalasawu/cardiff_weather_report_now.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/knights_of_cydonia_piano_sheet_music.pdfIn PDF document text
    • http://merigodivibamot.rf.gd/rewexibumutu.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/air_screen_apk_for_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/forever_and_one_helloween_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/sevizefazameliwenomemorud.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/18009627937.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_off00010299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10299 5776 bytes
SHA-256: 42b0dc7d2ddceaf10947fee99ecdc1c5b5b1f172eef0d68f149f3d0c61e67feb
font_01_sfnt_off00011621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11621 10760 bytes
SHA-256: cf6ea049716dba50f40f0f6acdeb7ee5f2ebfbaa37fdfe6a4a64b7efac05bf37