Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88110c1a07873a3…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 11:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9e460073f5426f3060637b388c040f22 SHA-1: b74d71a17f48773a1c0e00ef2bc4b05eafc85e36 SHA-256: f88110c1a07873a33d5dd61a5254012538b65c05730fdbdaeed4cffcc4dfbf4e
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://xezojetit.ru/award?keyword=uses+of+nouns+worksheets+for+grade+6+pdf PDF link annotation
    • https://cdn.sqhk.co/gapekozuwa/gfwhQge/bolagujidotobuxaramovo.pdfIn PDF document text
    • http://alania365.ru/circumflex_on_androidb3z00.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/ejeWCr1/58928508894.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/cFhhiM6/sexixi.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/PUgi1ig/nudakulilax.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/hcCggoW/75699550065.pdfIn PDF document text
    • http://banque-populaire.best/bloons_td_6_pc_hackjn06s.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/kiio1jh/pewpew_2_apk_2._0._7.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/hjpkFjf/warrior_cats_bloodclan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403143/normal_600131c863143.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/8Bl77RN/kologe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_5fd899876af75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384483/normal_5feea0569405e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369768/normal_5fe3c7b73fc61.pdfIn PDF document text
    • http://instofficial.online/slot_car_track_buildersl91qz.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/c0Rieig/cable_selection_for_motor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_602ee57ccf54b.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/IHpii6O/87558647667.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECE 5572 bytes
SHA-256: ace2ad45cac2bff06bd5cfee25843aa990e0b67c29b607d2f41acb0765058575
font_01_sfnt_off0000f1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D1 10536 bytes
SHA-256: 837de891ca69f36132609c62a25b08e93944b68d467cf23747604f4163b9f61c