Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2432ef88c0120b1…

MALICIOUS

PDF

82.2 KB Created: 2021-01-20 11:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 718bf2b525777e8963454c0f27918fb5 SHA-1: a441ba55f06ce27baca0e8c243f41cba9dd5f0bf SHA-256: a2432ef88c0120b1eb11167833b081a20d21fddb4587c701ecaf168d66453a5d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=von+mises+equation In PDF document text
    • https://cdn.sqhk.co/wabajevebe/Dfehihb/1956231063.pdfIn PDF document text
    • https://site-1175091.mozfiles.com/files/1175091/muzolusomegilogam.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/bmpcc_6k_test_footage.pdfIn PDF document text
    • https://cdn.sqhk.co/rinilafexowi/qF7hfih/bovipemimumuvisif.pdfIn PDF document text
    • https://cdn.sqhk.co/tusupuwadoda/QdUhaUo/vuropevurovagumofekude.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/fhjhaij/82463811574.pdfIn PDF document text
    • http://mozodulo.iblogger.org/asrock_h110m-_hdv_manual.pdfIn PDF document text
    • http://fapenas.22web.org/verkrzte_strukturformel_alkanale.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/zoromexemuzid/android_7._1._1_root_no_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/23404609002.pdfIn PDF document text
    • http://bajobakokela.epizy.com/ups_tracking_number_format_uk.pdfIn PDF document text
    • http://pelubameta.epizy.com/bleacher_report_college_football_recruiting_rankings.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/ecg_enfermeria.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/wuwekawugepomimo.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/rimikejunuruwasanotag.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/walalumog.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/pijodojuduzuxosanidunizej.pdfIn PDF document text
    • http://ritopagagibuxu.epizy.com/71563614498.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/File:Yield_surfaces.svgIn 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_off0000fa03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA03 4796 bytes
SHA-256: 1f92ccd0a4dd35e4994d0a5f08f54138141687242eaf3f1943cedb2adb3c7cd3
font_01_sfnt_off00010a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4A 15980 bytes
SHA-256: f71d29c180d947a88a743e8eb9884c7a7caa7ae0ea144043aaaaa564272573e9

Open this report in the interactive analyzer, or submit your own file for analysis.