Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1acb2e2d140e9dd…

MALICIOUS

PDF

64.0 KB Created: 2021-02-16 17:04:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2993bb101c5044fe7319b9653145bbd0 SHA-1: 7e1a80ff5952618664b5b8902f8c3dcec572fa5b SHA-256: b1acb2e2d140e9dd9c589fb5fa1aa0f1d9fc47e46fc898597361b26c8e30ba56
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://crophysi.ru/aws?utm_term=vishnu+sahasranamam+english+pdf+gita+press In PDF document text
    • http://55571.ru/6882096575p54t8.pdfIn PDF document text
    • http://bcipreactivaperu.com/offroad_madness_mod_apk_download_freem82kd.pdfIn PDF document text
    • http://trend-sales.fun/auxiliary_verbs_worksheets_for_grade_43eze3.pdfIn PDF document text
    • http://es50off.pro/mewuso2wlml.pdfIn PDF document text
    • http://mestorating.ru/apache_open_office_android_apk12q9k.pdfIn PDF document text
    • http://ashotik.space/free_vmware_for_linux_ubuntuyq6b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479932/normal_6011af1a980c1.pdfIn PDF document text
    • http://mazanatur.space/netflix_ad_free_apk0sqn5.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/mobile_coupons_apple_walletj6fht.pdfIn PDF document text
    • http://albatros-trans.ru/fruits_and_vegetables_having_vitamin_dwbhm3.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/sojaxub/adobe_xd_cc_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/667161435.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/leader_vs_badmash_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/karerufugaradivew.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/horror_movies_hollywood_in_tamil.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_off0000bd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8A 5420 bytes
SHA-256: 9f37e8cc40224168e20b0a349a7c8f68593493a94efc20a0f9367fbfdd0ba22d
font_01_sfnt_off0000cfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD4 10308 bytes
SHA-256: ad179bacf905b6a066ed5fcacce75515777f88cde90565a64075fdf34732b265