Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabcb8b271866a62…

MALICIOUS

PDF

78.1 KB Created: 2020-12-17 04:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9e61dadcb753c0e23a9c5b48047baccf SHA-1: d64f844c0e2c25c1edc07294625dc76f31529188 SHA-256: fabcb8b271866a6218df281f4fcfbb49b3ca898c96a3a8f7b549bd2bc57922ad
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/123?utm_term=madison+park+high+school+headmaster PDF link annotation
    • https://barobinamad.weebly.com/uploads/1/3/4/7/134756413/zopam.pdfIn PDF document text
    • https://mabogafopesusa.weebly.com/uploads/1/3/4/3/134307699/saxoju-bebawuluzonijol-nuluxo-teguzogefelo.pdfIn PDF document text
    • https://pudasebedizut.weebly.com/uploads/1/3/4/5/134587980/xuruladuzogiwi.pdfIn PDF document text
    • https://kegegofelev.weebly.com/uploads/1/3/2/6/132681159/filib_fiduxule_tezinowu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/920e364f-6bb0-49a7-b722-e99fcf8dacb3/24493175807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a004e92-7a74-4a44-ad39-63d6c2283aca/90677215407.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/spoken_english_book_in_gujarati_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/651e7ccd-bff2-4c03-8eb8-b47605e8984f/pocket_ref_4th_edition_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/19593960265.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18365f9866f3fd2d8aaf8/t/5fcec05f14319a51dc1c4c9d/1607385184433/mahashivratri_2020_images_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/31814970126.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/15320017068.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/affymetrix_power_tools_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/peoplesoft_9.2_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/77403860350.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_off0000f3f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F1 5556 bytes
SHA-256: 1ed78db7b6b9a0e71f650aa96f5852b01b7c88468f31468932de4ebef83ff0fa
font_01_sfnt_off000106bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BC 10884 bytes
SHA-256: dec7e499dd72da291ed164e5225046dc5810841d89e1e83dd28734d8961409d9

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