Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14b2d0dc186c436…

MALICIOUS

PDF

75.2 KB Created: 2021-02-23 17:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 022db51a026a9ba24f1d8dcf3932146d SHA-1: 25f6bf95083420fe4e9aaed3ffa02ac7dfa75f6c SHA-256: a14b2d0dc186c436657f730d365371aef7100bc58e087adec3ea7832527df313
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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.
  • 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://seumenha.ru/123?utm_term=harry+potter+y+la+piedra+filosofal+libro+en+ingl%25C3%25A9s+gratis PDF link annotation
    • http://file-id.ru/latin_book_2qoaux.pdfIn PDF document text
    • http://uablog.website/basketball_stars_mod_apk_freeqvvmg.pdfIn PDF document text
    • http://czecheducation.space/pofikisamivazelt02kg.pdfIn PDF document text
    • https://laxumobunutag.weebly.com/uploads/1/3/4/0/134017566/semanenipujan_ravawiveluvow.pdfIn PDF document text
    • https://rasisepuwefu.weebly.com/uploads/1/3/4/6/134678142/4a6e746782.pdfIn PDF document text
    • http://sosed.market/kingpin_bowling_lounge_kitcheneruvnu3.pdfIn PDF document text
    • http://boost-shop.xyz/gmat_analytical_writing_sample_essaysudtpu.pdfIn PDF document text
    • http://katermore.ru/fidegifawlwbh.pdfIn PDF document text
    • http://oneplusonemain.xyz/introduction_to_physical_oceanography_knaussazta1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vafipisepofowo.epizy.com/federal_magistrate_judge_report_and_recommendation.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/88243795628.pdfIn PDF document text
    • http://tamazodatitemi.epizy.com/camscanner_unlocked_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/jubovupofofemu.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/graphic_design_cv_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/yowhatsapp_apk_latest_version_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/59897520088.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/ratuxisotarisebivefuvino.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/51073953898.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_off0000e485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE485 5552 bytes
SHA-256: 44ce55375696ddda37acd436f7603f629bfd21ac1386933cad4d1cac241d7515
font_01_sfnt_off0000f73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73A 11552 bytes
SHA-256: 7602686796b6324549748d249b769226f82a9a44a0d74b39bc1db975b554a16c