Malicious PDF — malware analysis report

Static analysis result for SHA-256 950fc10935cd986d…

MALICIOUS

PDF

87.8 KB Created: 2021-03-01 17:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0eb63f0272880555b74b107e3d8784d4 SHA-1: 567417ae431652a1c24812f803b3dc5442a54b64 SHA-256: 950fc10935cd986de0902e93e57b2739e358cd090206e470fa98f257c461d330
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://fokemale.ru/123?utm_term=common+core+math+worksheets+4th+grade+division PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4526930/normal_5ff51f1b12ea1.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/TTpasAY/disaster_skins_for_roblox_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5fffb301b0ac1.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/ia3DhhF/37677056923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393904/normal_5fdea5a854ab8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387232/normal_5fe0443e81cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418993/normal_601ceebb5ad2c.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/Emm8mjd/sawesesabuviwofe.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/zafaronivaj/pumele.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/89000066833.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/fimepanigotuvex.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/96763212820.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/a_discovery_of_witches_season_2_australia_binge.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/jifupaxunu.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/apa_annotated_bibliography_format_6th_edition.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_off000119d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D7 5528 bytes
SHA-256: 4ef4b259cb9890181dc5573b0c4edd62ef7f54d50638c69772914a7442044a88
font_01_sfnt_off00012c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C94 11140 bytes
SHA-256: 4e7e5b6f10f5facc30d3442d0c4923653af0cf91a50831db733bea2b93fdf7bb