Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f014d4d3bda2e4…

MALICIOUS

PDF

68.5 KB Created: 2021-01-26 18:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f691a9174609e7c20a0f813a580bc905 SHA-1: b14097ac737c643227e0d173be4cd0350ea3859d SHA-256: f7f014d4d3bda2e4eb2b7443cb858ceb964dfce68d26fea50a0813043fd373e4
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/aws?utm_term=access+database+repair+software+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451035/normal_5fdc6af2e7c79.pdfIn PDF document text
    • http://norudumof.22web.org/sezujusolajokikatanalom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375716/normal_5fdf8031387eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_5fde69e36bb04.pdfIn PDF document text
    • http://bisikar.22web.org/6329914393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489050/normal_5fca82cb6895a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462352/normal_5fccac600d997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_600f2667720e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mowigefugitixa.epizy.com/hunger_games_book_age_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/amended_articles_of_incorporation_format.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/xokadame.pdfIn PDF document text
    • http://wasalesex.epizy.com/852911233.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/valewuj.pdfIn PDF document text
    • http://sabukizazuse.epizy.com/edgewater_florida_weather_report.pdfIn PDF document text
    • http://zatafefot.rf.gd/bioplastic_article.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_off0000ce56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE56 5336 bytes
SHA-256: c2c83e86e638afabb1769122f29cb16166e6a2b0c90514bac9eacabde80f78f0
font_01_sfnt_off0000e099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE099 10948 bytes
SHA-256: 56be2b13a2fb0037a1ec1e588a865df2638ecfecf7531232987e253966aa0134