Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20efbbaa88a184e…

MALICIOUS

PDF

64.4 KB Created: 2021-02-12 10:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 80b9d0c8265d9bb5c634198a898ab5bd SHA-1: 5a6f464493767697f4bc266c9493119f228f7895 SHA-256: a20efbbaa88a184eea2c7566e7ce67e542785861d8927c40037e5fcdd419715a
256 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://lapawiniposa.weebly.com/uploads/1/3/5/3/135323982/zuleja.pdf.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wix?keyword=what+does+notice+of+xbox+live+enforcement+action PDF link annotation
    • http://spainwow.pro/letorojp4y.pdfIn PDF document text
    • http://antonio-ita.space/app_cloner_pro_mod_apk_latest_versionsed57.pdfIn PDF document text
    • http://bumaga.bz/best_football_prediction_apk0ltvw.pdfIn PDF document text
    • http://crubr.space/flightpath_aviation_english_for_pilots_and_atcos_students_bookmkm2r.pdfIn PDF document text
    • http://mjawebdesign.net/391914556051e0qp.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/minesweeper_tips_advancedavn17.pdfIn PDF document text
    • http://erkutungotu.com/7338945022lmseb.pdfIn PDF document text
    • http://mydenverneighborhoods.com/13437330591c1rj0.pdfIn PDF document text
    • https://lapawiniposa.weebly.com/uploads/1/3/5/3/135323982/zuleja.pdfIn PDF document text
    • http://momsmall.space/arbeitszeugnis_schlussformel_zwischenzeugnis4fbck.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/padanivozeb/nunar.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/pirof.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/rockstar_2011_full_movie_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/54236951489.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/baidu_translate_apk_file.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/wow_classic_eranikus_guide.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_off0000bf4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4E 5544 bytes
SHA-256: b91db3c37b5fe6be138dc146cf3d6cd98d829cae56786b079874e3ec25a1062c
font_01_sfnt_off0000d215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD215 10056 bytes
SHA-256: b128e85725bd3cb5315569ae2808da72f9bc71fb5790db6c4d6304f67f274a4b