Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde66a97a3624fb8…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 19:30:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a08b8542347c6629d4d11b0a275e1141 SHA-1: 6a19450cfd3b555ff07a8d97f8c45176c8ea25fe SHA-256: dde66a97a3624fb8d09430701fd9373898d751c7d03c2562738021e0fc0edc06
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://jottigo.ru/wix?keyword=400+years+hacked+unblocked PDF link annotation
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/nibetapijenaraso.pdfIn PDF document text
    • https://zulunapakaf.weebly.com/uploads/1/3/1/0/131070820/5184585.pdfIn PDF document text
    • https://cdn.sqhk.co/dimasemi/ib136hi/fanatomiluw.pdfIn PDF document text
    • http://kikavixerag.iblogger.org/nuzabuxigazalipitefifo.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/jryqT9N/touchgrind_skate_2_full_version_apk.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/fidesu.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/h0Qghgi/crowd_running_and_screaming_sound_effect.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/8ajeieu/play_music_with_lyrics_iphone.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/mejobu/piwuzilutuk.pdfIn PDF document text
    • http://gurajitobad.rf.gd/brothers_movie_audio_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/87740884766.pdfIn PDF document text
    • http://fevidubigozexa.rf.gd/videdipugutupasezunapuf.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/fingertip_pulse_oximeter.pdfIn PDF document text
    • http://sibijexobesu.epizy.com/jugeli.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/antitumor_activity_of_plant_extracts.pdfIn PDF document text
    • http://zekovulelopur.epizy.com/bogibedekow.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/6th_grade_vocabulary_worksheets_free.pdfIn PDF document text
    • http://rimojiruseb.rf.gd/accurip_black_pearl_software.pdfIn PDF document text
    • http://kidogip.epizy.com/iran_contra_affair_reading_answers.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_off0000d9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B0 5468 bytes
SHA-256: 23b3f96b58b009386c5a6dfeaebde90b0f631221d943c12ca3fb0fb8a07196fd
font_01_sfnt_off0000ec47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC47 10044 bytes
SHA-256: 2a98c70469304878988e0b47a9fe009eece78b2bbe97de8c0787aaae70100130

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