Malicious PDF — malware analysis report

Static analysis result for SHA-256 560214bcf19a1679…

MALICIOUS

PDF

71.8 KB Created: 2021-02-27 00:30:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9399bf9639c422175161a127e3271488 SHA-1: a87b70ca69d0b291acfe4966cc36762fc054181b SHA-256: 560214bcf19a1679524798043378beb8b10524d3df62f353f539524ccd0146f9
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/aws?utm_term=verb+to+be+exercises+pdf+with+answers PDF link annotation
    • http://arnautmebel.ru/43838172800o5fs2.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/sutemetur.pdfIn PDF document text
    • https://wifevotus.weebly.com/uploads/1/3/4/8/134897576/xejujokurel_wovejuladokes.pdfIn PDF document text
    • http://pr-bux.online/bowajandemiw.pdfIn PDF document text
    • http://republvinb.fun/talktime_free_recharge_websiteay2e8.pdfIn PDF document text
    • http://musc-media.xyz/84451719266is03h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://panulanupujudun.epizy.com/python_list_files_in_folder_recursively.pdfIn PDF document text
    • http://lewinozed.atwebpages.com/96961745731.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/royal_canin_medium_puppy_food_feeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/ba_final_year_date_sheet_2019_mgsu.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/79315166923.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/davis_drug_guide_ondansetron.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/descargar_musica_de_los_caminantes_mix_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/maths_calculator_paper_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/wav_files_alarm_sounds.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_off0000dbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE8 5476 bytes
SHA-256: c6e369be39f7b6bdecc29cee54ef2d0d11c45b7e791f5cfa148e9740d1302352
font_01_sfnt_off0000ee9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9D 10492 bytes
SHA-256: 2502e25a2e7bbcc8b46318bc877368200cef10180e6d01d590a2d988527273ac