Malicious PDF — malware analysis report

Static analysis result for SHA-256 6899e5b7761402bc…

MALICIOUS

PDF

71.9 KB Created: 2021-02-28 05:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: be38b3677a058e2465d7ffe1f1faf66b SHA-1: 37e2464dc2090b1f51c8770a290baa0f548df0a4 SHA-256: 6899e5b7761402bca100c9c5d7dcaeabc6b0862a80200c337df10e4dc69ea6b2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=lexus+rx+350+f+sport+features PDF link annotation
    • https://cdn.sqhk.co/zojoguxuban/ihibhjE/weeds_cast_season_7_episode_4.pdfIn PDF document text
    • http://dixojele.22web.org/animation_movies_free_tamilrockers.pdfIn PDF document text
    • https://xejenusi.weebly.com/uploads/1/3/4/7/134762281/7c2bc.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/karcher_pressure_washer_repair_shop.pdfIn PDF document text
    • http://rekopeza.22web.org/fimefibaxemukix.pdfIn PDF document text
    • http://dazenad.iblogger.org/warren_buffett_foundation_contact_information.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tisiwiruligeg.epizy.com/netflix_app_for_toshiba_smart_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/kali_linux_bootable_usb_software.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/tekinixazuderawofufal.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/bhojpuri_bhakti_video_song_2019.pdfIn PDF document text
    • http://fanevisexika.epizy.com/gathering_storm_new_civs.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/boxonusaturef.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_off0000dc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4B 5300 bytes
SHA-256: 8d844a3e630dcf8b26f4ef2a84888d855f0fc33ad870b32614874dad4418421d
font_01_sfnt_off0000ee6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6A 10556 bytes
SHA-256: 7a352f4d70208e0bb6281ecf1e41808dfeb893b486f30ee2465654fc3c13771e