Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d58917be5bd6b3…

MALICIOUS

PDF

81.1 KB Created: 2021-02-21 19:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a68f317bb05ecf9aa862da5916645ea2 SHA-1: 187707141655e41217badc09ebab2eb6cbb4bb99 SHA-256: 32d58917be5bd6b3eea767fbaaabf1aaed5561c348bcf3f646de31bfb1d32286
244 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kewegiru.weebly.com/uploads/1/3/1/4/131438086/8684168.pdf.
  • 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://yafferge.ru/123?utm_term=the+language+of+flowers+vanessa+diffenbaugh+epub In PDF document text
    • http://relax35.ru/ava_addams_new_porneha11.pdfIn PDF document text
    • http://dontbeshy.xyz/how_to_make_instagram_black_theme_androidironz.pdfIn PDF document text
    • http://idem-peshkom.ru/litozemuihryx.pdfIn PDF document text
    • https://kewegiru.weebly.com/uploads/1/3/1/4/131438086/8684168.pdfIn PDF document text
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/korewotebamip_vudezijovik_lixetisixega.pdfIn PDF document text
    • https://mawikimame.weebly.com/uploads/1/3/4/2/134235565/9863046.pdfIn PDF document text
    • http://santaparker.store/environmental_science_merit_badge_requirement_4_answers9e5x1.pdfIn PDF document text
    • http://fortuneo.biz/werireparisevelsierd.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/Lidgghj/diy_movie_night_ideas_at_home.pdfIn PDF document text
    • http://misstourist.info/root_explorer_apk_android_2._3._6u8rj3.pdfIn PDF document text
    • http://ecoterritory.store/types_of_networking_cables_and_connectorspmyhe.pdfIn PDF document text
    • http://shop-onlinediscount.xyz/bsc_agri_online_application_form_2019d7go1.pdfIn PDF document text
    • https://nifusesoporiw.weebly.com/uploads/1/3/5/3/135309858/zovedatawo_mesolakapajadar_wazatif_kimowewaxuver.pdfIn PDF document text
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/kijojovilujuz.pdfIn PDF document text
    • http://termometr-medikal.site/30975303390nc7b3.pdfIn PDF document text
    • https://tibilizam.weebly.com/uploads/1/3/0/7/130775373/xikoperemilob.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/ElgdieR/71446942298.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/Yhahjgd/patafuvudejolesin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10031 5544 bytes
SHA-256: c2281dab72c455ad29668f4991bb2dd9c68d24721cfa8f43b0d58b9343bd0ee7
font_01_sfnt_off00011320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11320 10516 bytes
SHA-256: aeb1aae9047cc18dfcb3d746013978f5f3a6a7ef2223944f940ee05a3a17a412