Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ecd19fa71ded429…

MALICIOUS

PDF

70.0 KB Created: 2021-01-31 04:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: af45f17474ab4acbdf9af3a67d7c52cf SHA-1: 89ee5a3833cc9e88af2b23dc48296bd557e8f85e SHA-256: 1ecd19fa71ded429f093367b6f53886fe4a9c2d424efb72c0c9bf9c715d0c879
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/wb?keyword=radio%20flyer%20town%20and%20country%20wagon%20vintage PDF link annotation
    • https://cdn.sqhk.co/sofaxuleruri/RFkMxV4/92031099524.pdfIn PDF document text
    • https://tojuxumisadef.weebly.com/uploads/1/3/4/7/134714483/b0f1a.pdfIn PDF document text
    • https://samituvejasuw.weebly.com/uploads/1/3/1/4/131406365/mawup.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/Xhjchjn/twisted_wonderland_leona_gallery.pdfIn PDF document text
    • https://wexasubofuxumeb.weebly.com/uploads/1/3/2/7/132740188/ponakelipukira.pdfIn PDF document text
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/ludepeg_figidi_wesiborako.pdfIn PDF document text
    • https://lidimegofomizut.weebly.com/uploads/1/3/1/3/131380930/tenodinalojifupafiva.pdfIn PDF document text
    • https://zesalogerevuj.weebly.com/uploads/1/3/4/6/134684883/sinetamivukuro_zizijapavili_namewomuj_zilogotixadan.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/dukexajuj/howard_zinn_chapter_7_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/photoshop_online_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/comment_faire_une_bibliographie_de_mmoire.pdfIn PDF document text
    • http://vavijiguzedimeg.epizy.com/addition_maths_worksheets_year_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/61325159334.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/cv_template_doc_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/song_aladdin_da_chirag.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_off0000d2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DF 5272 bytes
SHA-256: 5d4f3dc947b128404b7419a563b726c6616bc97199672d8c458c44bccd166e2f
font_01_sfnt_off0000e506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 11184 bytes
SHA-256: 0b8ac35e3a627534f8f22ec9aa2229035e1b9678f643fa89ab9aac2e03521963

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