Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12e3231076f79ea…

MALICIOUS

PDF

71.1 KB Created: 2021-02-28 20:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7e0809a5884474d389e383ad7c03e1e5 SHA-1: ca5e35411699a42c70568735255054248ca72f31 SHA-256: a12e3231076f79ea14cd6f85accc18bb695d4e0e8f17a27b0c4da9e9ceb19c81
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://jumiwimov.ru/wix?keyword=theoretical+and+experimental+probability+worksheet+11-2+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386828/normal_600413eb904b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5fd2d3753a5bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_602a27313776a.pdfIn PDF document text
    • http://helpcopyright-service.com/livro_andreas_moritzoysh7.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/Jjcgdjc/63688292820.pdfIn PDF document text
    • http://mon-cmbretagne.com/73840266155nyh16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc7292fe7502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409122/normal_5ffdbe6ab9f10.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/ijjgPOE/latitomugivupovesodojigem.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/a4icxz6/adventure_time_simon_and_marcy_full_episode_dailymotion.pdfIn PDF document text
    • https://cdn.sqhk.co/videmixolute/iAKeHVg/view_go_fund_me_campaigns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488592/normal_60224c22892f2.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/foneniz/70632269194.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/tugexupumufezosabitojizo.pdfIn PDF document text
    • http://xabofaveretezu.rf.gd/27054797181.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/fulikexumazijuw.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_off0000d7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FE 5944 bytes
SHA-256: 6bd1ad595ba291b9f5a88b54d9f0b11331a12c942988ee4560770a3d814dcbd9
font_01_sfnt_off0000ec30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC30 10184 bytes
SHA-256: 735b9b6ebc6103eb809e71a8dca25903100683ecc396bc4351c414be7caaf3f9