Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc706db3fe5eb8a…

MALICIOUS

PDF

66.3 KB Created: 2021-02-25 09:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2257ab1ec350dbb4cf165058d84d7ab7 SHA-1: f377bb9423e2ed517b2f487a6f6059e6e074b2b1 SHA-256: afc706db3fe5eb8a8b55d8c246e62bd2df2c5fa3cc494cc645f9723a1ffa6281
194 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
  • 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://crophysi.ru/wb?keyword=quitar%20el%20formato%20de%20fecha%20en%20excel In PDF document text
    • http://lomigakorak.getenjoyment.net/dixulusejakadosesuw.pdfIn PDF document text
    • http://milesnires.xyz/starbucks_almond_milk_drinks_nutritionbzm9z.pdfIn PDF document text
    • http://katipef.medianewsonline.com/ruvazo.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/25262187232.pdfIn PDF document text
    • http://sibuvre.com/what_birth_sign_is_december_213odfp.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/86669577540.pdfIn PDF document text
    • http://obzorov.site/rigiwiwolupanikaxija8agod.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/dukavunivifa/93568163446.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/photo_collage_art_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/lathe_di_chadar_video_song_free.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/vicks_germ_free_humidifier_not_using_water.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/lasobedutinugogikav.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/supotina.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/56785018117.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/wordscapes_cheat_apk_free.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_off0000c4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BF 5212 bytes
SHA-256: d04eaf5b9ab034f085d90a8ea16e838155a2ce1ed7af6a6e01b92cafec1e057a
font_01_sfnt_off0000d652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD652 11156 bytes
SHA-256: 6232c34cd979bbe1eccdccfd12fa1468a24ff2474417bf35d58f1ec4383fe072