Malicious PDF — malware analysis report

Static analysis result for SHA-256 beaba34c1367d9d8…

MALICIOUS

PDF

53.7 KB Created: 2020-11-05 02:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: d1451a1d1bd5848862c1295a0ae3c4ba SHA-1: cff809e0e3c85a3175731d33fdc49aa2f7744e01 SHA-256: beaba34c1367d9d84feab8e86324d60523edc3a112e4e7e2f12d57d50bc64c34
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?keyword=tibia+knight+leveling+guide+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368474/normal_5f89145d1d79e.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/8360262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420612/normal_5f97e80e469b9.pdfIn PDF document text
    • https://xovadesunuzavam.weebly.com/uploads/1/3/4/4/134479636/2989767.pdfIn PDF document text
    • https://jodotabamusunew.weebly.com/uploads/1/3/4/4/134402052/lupeval.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/nufav-xuwegibefut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f9edfe245abe.pdfIn PDF document text
    • https://defugelunek.weebly.com/uploads/1/3/4/5/134524545/felupofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jumedemimo/kixorurireguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03dd97de-a4f1-4d62-b4d3-63311f6975d4/warframe_beginner_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/historia_del_liberalismo_europeo_ruggiero.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/ryobi_trimmer_ry253ss_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/atal_pension_yojana_sbi.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/sociology_study_guide_wgu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7151bddd-2219-4cf6-a2ce-9ac812f41e54/sibos.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/32643234481.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 5280 bytes
SHA-256: 6ecbdd97cfc96af7b06fc25292ce3e9806e736edce96731c0b6d993e420a2712
font_01_sfnt_off00008193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8193 10472 bytes
SHA-256: 9cc5674a1ac5c225d5f9af2e8986803233380dccf9eb5e2a275e794ede978ee5
font_02_sfnt_off0000a593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA593 16348 bytes
SHA-256: d6354e55a0ef37be0a61ea5c81a5777e0d3d2e8edb3ff3de3a4eaf5ff52a9aaf
font_03_sfnt_off0000bb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB6A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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