Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41c95c05c287cf4…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 03:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9db1ed755db6cec006ec0cf2fbf8a37e SHA-1: 58f9a5857838c64eb5694a01224ceae38152cc52 SHA-256: f41c95c05c287cf4d561c4e24de584c3bcb4963816059f75092e8437e65dd67d
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://gimoguvi.ru/award?keyword=autocad+3d+building+dwg+download PDF link annotation
    • https://cdn.sqhk.co/jaruxabal/6je9qjd/dragon_dice_tower_3d_print.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/ihzZSVM/begadolap.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/acyaXie/initial_drift_game.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/jhcicOa/zojovutolimasigo.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/77StKI0/53216437486.pdfIn PDF document text
    • http://itsnat.space/walinafesivefefotezoklzdj.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/jchj2k1/haki_soccer_star.pdfIn PDF document text
    • http://originalhallyu.com/kipugalep4ymue.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidaxiwuk/ojhxjbz/fabojoxiximoxogewodoru.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/ibGhihg/66881643261.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/ZSKmBWF/73415411734.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/nuxepiduded/cisco_webex_add_on_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/acretismo_placentario_por_ultrasonido.pdfIn PDF document text
    • http://lapamapifutul.epizy.com/zatora.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/32521273714.pdfIn PDF document text
    • http://jataluwapimose.rf.gd/tyt_th-9800_repeater_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/52295547640.pdfIn PDF document text
    • http://nojatajof.rf.gd/overcoming_gravity_book_gymnastics.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_off0000d7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FF 5220 bytes
SHA-256: b528037efd75f62ba8105fc684613f501612d19f8cc67f8aa9b8a356916a8e8e
font_01_sfnt_off0000e9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E9 9792 bytes
SHA-256: f3d4fc59f970053622510ed94308e284433b2ba9ba0ce0ed8f6c6f8c7a27397c