Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fc4770f67df190…

MALICIOUS

PDF

70.3 KB Created: 2021-02-23 09:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 20879d62d0bda26ecb84159fb2368bc0 SHA-1: 606e85430fa3f05d93aa194c075cab56ba3fef1d SHA-256: f2fc4770f67df1909e92144c7a0dcc2578bd91c99c8086ab603b409e03de4583
254 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
  • 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.
  • 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.
  • 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=nissan+versa+service+manual In PDF document text
    • https://cdn.sqhk.co/guvelebul/ig3ggJz/37217609527.pdfIn PDF document text
    • https://cdn.sqhk.co/tifatuju/7C5hakH/age_of_history_2_apk_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/zz2zhg5/arena_theatre_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/dAjffhf/jebagoji.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/jjgrjeK/46371365073.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/hcEyaic/jivurozamemoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/kemomonil/8hifiL7/hotel_package_inclusions.pdfIn PDF document text
    • https://cdn.sqhk.co/faresawuf/bBjbCef/60520305238.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/8YZUges/abc_phonics_song_video_download_free.pdfIn PDF document text
    • https://kexulisil.weebly.com/uploads/1/3/4/7/134762119/dosaza.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/kikunojulejuj/64465405978.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/toy_defense_2_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/how_to_calibrate_temp_transmitter.pdfIn PDF document text
    • http://vimonaker.epizy.com/befifadosopuvijipobinak.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/anaganaga_o_prema_katha_video_songs.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_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 4972 bytes
SHA-256: fdefab24b5aae33b8175946ff13e37ca28ba0e5784d46a0864bd9909dc2e5774
font_01_sfnt_off0000e9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C3 10100 bytes
SHA-256: 33830d100193f8446d32aaa6e6f5a15e02ab3f83cde3ec602aff49ce97d6bbfb

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