Malicious PDF — malware analysis report

Static analysis result for SHA-256 37bb194864553f97…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 05:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c89a90d212aae9a7f18d0a6fa3928b59 SHA-1: daf9a260101c70fb52e5dac41be8c71e56ae6efe SHA-256: 37bb194864553f97733cb612e241df4fcace3f0e93ef5acc432f5b54ac08140e
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=how+to+install+fastway+e2+hitch In PDF document text
    • http://jawixogu.mygamesonline.org/15340820317.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/sat_test_prep_courses_near_me.pdfIn PDF document text
    • http://flipping-car.online/4k_video_er_websiteo1l5e.pdfIn PDF document text
    • https://jitegolugitu.weebly.com/uploads/1/3/4/6/134643776/tepetobefaju.pdfIn PDF document text
    • http://chaptejvxz.fun/jazefanajexunixozejozumk0hxq.pdfIn PDF document text
    • http://fezuwudanupemav.22web.org/frases_de_walter_riso_los_limites_del_amor.pdfIn PDF document text
    • http://delinapod.mypressonline.com/2._what_are_the_reactants_and_products_of_cellular_respiration_and_photosynthesis.pdfIn PDF document text
    • http://kpovli.ru/how_to_flush_gallbladder_and_liverq0j2j.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/77813645277.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/63700281227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://popofisofol.myartsonline.com/eat_fit_meal_plan_bewertung_deutsch.pdfIn PDF document text
    • http://newemepakirid.myartsonline.com/92969913084.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/belleza_regular_font_free.pdfIn PDF document text
    • http://texepov.rf.gd/61534700566.pdfIn PDF document text
    • http://kazaxese.epizy.com/nfl_week_7_predictions_bleacher_report.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/zaxol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF80 4948 bytes
SHA-256: 33987002ccd7a4e06d35251bb99533c8e3cdb20fae0ab4a8bc231597fecc7f13
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 10124 bytes
SHA-256: a851d6d63daa7a36797f78aaf7428e187b25919598093840399d70a2cf94a36b
font_02_sfnt_off00010332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10332 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f