Malicious PDF — malware analysis report

Static analysis result for SHA-256 55546fc1df4e992a…

MALICIOUS

PDF

74.5 KB Created: 2021-02-20 07:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b6e7667318f8f9827039b69883cebd4b SHA-1: 9fd518721a9eae9dd7a666c6b9362ab4928ffc90 SHA-256: 55546fc1df4e992af4cedf7149be61bf51d0499b632168023a6d193539187c98
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://baarspo.ru/wix?keyword=tube+mate+apk+free+download PDF link annotation
    • http://speak4pro.com/moxibowewizafefasa6hply.pdfIn PDF document text
    • http://a1metromovers.com/how_to_use_fagor_pressure_cooker_steamer_basketpl7r4.pdfIn PDF document text
    • https://cdn.sqhk.co/dinokafoxume/gjFiahj/rikipiwopeta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404299/normal_5fecc9992c371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_602af1905b25c.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/iagiPgd/tijizaz.pdfIn PDF document text
    • http://sqrab.top/lepetu1c6d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_60216cd314fae.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/jjfidgh/jelesumuligesezekupaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379982/normal_5febe9fe62efb.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/PN1oJgf/dowabufofa.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/nufidibodudulad/kaala_patthar_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/lamor.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/applied_clinical_informatics_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/bhagavad_gita_in_telugu_free.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_off0000e2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E8 5256 bytes
SHA-256: 3acf4a600677874878b07910768accd2d8c7ba3074a7cdc34c7b3834e0101ae9
font_01_sfnt_off0000f4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BF 12516 bytes
SHA-256: af219e2f729e1ab7f44345f91b590758704124ea64355b250f5b52fe00ca4b0f