Malicious PDF — malware analysis report

Static analysis result for SHA-256 89df4f70bcec2559…

MALICIOUS

PDF

71.6 KB Created: 2021-02-13 23:49:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5cb1efb8c16dbf16732df8527c17ad8b SHA-1: 32dc797c6a928b4c8b9050ff2f8fba4e33488df8 SHA-256: 89df4f70bcec255947c15848674e345de520e4e0ee194fccef949e33ed9ed6f2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=summoners+war+mod+apk+unlimited+crystals PDF link annotation
    • https://cdn.sqhk.co/nudofarus/c42jagj/power_media_player_for_dell_not_opening.pdfIn PDF document text
    • https://majojolug.weebly.com/uploads/1/3/4/5/134595566/gagezibodapudokifiwe.pdfIn PDF document text
    • https://roxabagoxe.weebly.com/uploads/1/3/1/8/131857818/bibagipamojuzudesa.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/Vhhhc0Y/fevidex.pdfIn PDF document text
    • https://bugasidajuw.weebly.com/uploads/1/3/1/8/131856032/3d496d0bc11f3.pdfIn PDF document text
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/tasavopikobabi.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/desenaz/creeper_world_3_arca_guide.pdfIn PDF document text
    • http://xawezukazekexi.epizy.com/dobepav.pdfIn PDF document text
    • http://zuvujivir.rf.gd/78646027808.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/ap_ssc_marks_memo_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/conformal_conic_projection_uses.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/excel_sheet_save_as_vba.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/imo_free_video_calling_app.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/11549181856.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/russian_accusative_case_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/window_air_conditioner_parts_and_functions.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/podopatawupalulikaf.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/baby_chinchilla_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/baby_cot_bed_sheets_amazon.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_off0000dac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC3 5580 bytes
SHA-256: 710236df20310bc52d171039ae9d8f3c03c83d83adafdc0d02fd116951aae01b
font_01_sfnt_off0000edbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 10388 bytes
SHA-256: 4f5f6843da786dbb1768b701d238aba2c3f4172dead0e79ab832046100cedc87