Malicious PDF — malware analysis report

Static analysis result for SHA-256 448ccd5ff4d78724…

MALICIOUS

PDF

73.9 KB Created: 2021-02-20 09:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 37792c7e1973953462fab66c0e1ab0aa SHA-1: 18b78b7e8440b73decf5e639dba9cdde343368c9 SHA-256: 448ccd5ff4d787247a3e330f37bd8710cd703f331e1a1c7252a641ae2cc95b15
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=sea+of+thieves+forsaken+shores+guide PDF link annotation
    • https://cdn.sqhk.co/tefozakozup/AkhjFCZ/21133873586.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/i4ghrhi/61696494092.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/iifhhjj/wood_sofa_set_images_with_price.pdfIn PDF document text
    • https://cdn.sqhk.co/kipasewimoni/iarCphd/tamil_stylish_fonts_copy_paste.pdfIn PDF document text
    • http://investmag.org/gezunnkpes.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/bGidiie/1141086538.pdfIn PDF document text
    • http://return-0.com/xafogazateleruguradu4oaph.pdfIn PDF document text
    • http://forecast.bet/videwatali2ai4x.pdfIn PDF document text
    • http://help-ruleviolation.com/how_to_create_a_youtube_gaming_logowp8qt.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/WTKdgDn/50056464922.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/N3Fkgdg/1225527843.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/Amhe5ha/31166301061.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475216/normal_6008b5d8d6cb5.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/jodabiladezot/indian_old_audio_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/72881700194.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_off0000e526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE526 5364 bytes
SHA-256: 6f301a1838e73f019e2721acbb071ac9ae45e16b086f5caadc694ee92347f1f7
font_01_sfnt_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 10364 bytes
SHA-256: 663bb735837b4df61d493412c70a85038c860d7ccc0800e047e6434f259f755a