Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb497cc03653b02…

MALICIOUS

PDF

70.6 KB Created: 2021-02-14 04:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b9513e45ed2c9b37de02a7c821ff7261 SHA-1: 6d59316d035a94aa8b42df325fb143e4b5f4a575 SHA-256: 8bb497cc03653b021ba5a502703dfadd3bef142a26d58c80f81149b1ac722264
236 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.
  • 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.
  • Fake encrypted/secure-document view lure high SE_ENCRYPTED_DOC_LURE
    Document claims to be an encrypted or protected file that must be opened through a 'secure view' link, and the action link uses deceptive infrastructure. This is the secure-document credential-phishing carrier: the page imitates a secure-mail / document-cloud gate while the link leads to a harvesting site. action link to abused redirector.
  • 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=examples+of+cyberbullying+uk PDF link annotation
    • https://bimuxafidiw.weebly.com/uploads/1/3/4/7/134701061/99223123af862.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/g3gfhje/f1_playseat_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/XggRaig/stray_cat_doors_stage_1.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/HZsBYid/32580584436.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/ehdxUgi/59208219044.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/8723294.pdfIn PDF document text
    • https://jikolugoxolij.weebly.com/uploads/1/3/1/3/131379047/8257140.pdfIn PDF document text
    • https://cdn.sqhk.co/nezazexador/jjjihji/ice_cream_cake_dairy_queen.pdfIn PDF document text
    • https://cdn.sqhk.co/dozumapufa/ihggJha/seabeard_can_t_find_stonefish.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/chehajg/49910764318.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/b6hajih/39774069793.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/gimqlDM/mebokisibovusirepo.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gaUggfn/pokemon_trading_card_game_online_download_latest_version.pdfIn PDF document text
    • https://kagukemo.weebly.com/uploads/1/3/4/8/134884413/japefesumu.pdfIn PDF document text
    • http://alexandreablog.com/game_my_talking_angela_cheat_apko4eja.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/seiijbG/zosigagiwivugopudarina.pdfIn PDF document text
    • https://cdn.sqhk.co/zulatobi/yigFb44/grow_financial_credit_union_careers.pdfIn PDF document text
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/wosizivaxolar_tubakopugome_vakidal.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_off0000d7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7ED 5664 bytes
SHA-256: d1687ddbb1299595dd9c2598b06358a82f21dc7220ac3d256f18537f7c2801ef
font_01_sfnt_off0000eb31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB31 10104 bytes
SHA-256: 55ed1eefb3de3de642e2562e49531a218ec4682b97dab4ac07f8dfb602823c73