Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7a0791e4b4ae5c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 02:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 56dd0c6eadb25d4da54acd7715bd543d SHA-1: c4db30004646cbdc11908aa15bff21f9bf248765 SHA-256: 3e7a0791e4b4ae5c5cf7387b368a3c99088df46660241b4bb381b9e604346a8e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=what+does+the+whole+of+the+moon+song+mean PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4498702/normal_5ff5fa278f6c4.pdfIn PDF document text
    • http://netlysy.online/wwe_raw_results_today_bleacher_reportai4pd.pdfIn PDF document text
    • http://vknacruckalaikov123.xyz/caribe_in_nueva_york_poemusx5b.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/how_much_does_dhl_charge_for_international_shippingn3fo4.pdfIn PDF document text
    • http://wexoxunesixu.iblogger.org/sazapewagetatixutuwekevib.pdfIn PDF document text
    • http://jowuguzipupuv.iblogger.org/33126325099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486982/normal_6024a7ba10a3e.pdfIn PDF document text
    • http://ig-socialmedia.xyz/verbal_pronunciation_guidexiy0i.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/tokafanawa/25174302352.pdfIn PDF document text
    • http://memilupa.rf.gd/letter_of_intent_sample_for_residency_training.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/18069253245.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/the_enormous_crocodile_text.pdfIn PDF document text
    • http://doxanoz.rf.gd/polidudavesuxomoxagepew.pdfIn PDF document text
    • http://bonanelokuweje.rf.gd/tutig.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/85016024034.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_off0000e0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D4 5328 bytes
SHA-256: 93e8abb809926d98e04790e6add07729cdb303209d9427ca1735c41aff48ddae
font_01_sfnt_off0000f2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EF 10956 bytes
SHA-256: f66f2df9332a1a4161c97fd0610c43ca3935e8440cba1edff87584329daaf5d7