Malicious PDF — malware analysis report

Static analysis result for SHA-256 44923427ad1506ce…

MALICIOUS

PDF

73.0 KB Created: 2021-02-15 14:48:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2e806d35de802e052010d0e2ba680d80 SHA-1: 7cf82c021d903412f9c2d3cb8dd236e8b297750c SHA-256: 44923427ad1506cebbebeee06cac6f6482dd363c87e57c1a4612b925fa0a48dd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=pathfinder+kingmaker+ustalav PDF link annotation
    • http://f13x.xyz/69695144476gpumu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450259/normal_5fdefa82efe7f.pdfIn PDF document text
    • http://odemebayisitrafik.com/mit_phd_application_processdtjes.pdfIn PDF document text
    • http://accface.in/serhat_ahmet_tan_kitaplar_indir828xf.pdfIn PDF document text
    • http://bestrongbyg.com/2560597498n9ivp.pdfIn PDF document text
    • http://walletelectrum.buzz/piano_lessons_video_download_freeuc4as.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450883/normal_5ff15e9254699.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/kufamisebaf1s3p1.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/cavatina_deer_hunter_guitarn07qe.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/mibiwivanetuj/outstanding_debtors_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/70413419589.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/free_printable_first_grade_comprehension_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/aperture_priority_or_manual_for_portraits.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/60546890294.pdfIn PDF document text
    • http://zemufobure.rf.gd/ff14_containment_bay_s1t7_guide.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_off0000e1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F5 5444 bytes
SHA-256: 4bd1fce8d408bdb46d49d718d1e460d1e84e0a2e901480251950f6269959c5ea
font_01_sfnt_off0000f45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45F 10000 bytes
SHA-256: 1dbc1cfa4ea6e443bc3eada7f131f72cb4ef6b01a03cbfea201b1ea36bf3d6b8