Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb681fae70a6c3a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-17 02:07:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d74f0a30f08ce335ffa6ec9622a10aa2 SHA-1: fb2ab8f50e87d0a47c0d9e34fae872f910f24b74 SHA-256: 6bb681fae70a6c3ab0b4f19a2efaa0132443f6bac172db81743711af5b35a362
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://jottigo.ru/wix?keyword=lego+dimensions+manual+batmobile PDF link annotation
    • https://cdn.sqhk.co/lanumakefu/zghgjCD/jomoliruxonekapofavoforun.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/pidetulu_vemebemit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402956/normal_5fca619c11ab4.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/1hcgcia/zupowilewi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454807/normal_5fed41e1f144d.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/gdjcvLN/42676797908.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/jdUSicl/terosavurejam.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/aZPCAia/kupawixexipevowipok.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/aZL3Mgf/dining_room_table_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/thgQ2ha/37468477714.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/fizaxo/gutuwos.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/metal_candy_cane_wreath_form_dollar_tree.pdfIn PDF document text
    • http://susupufewowe.epizy.com/samsung_allshare_fr_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/acid_base_titration_worksheet_chemistry_if8766_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/kadobidorezelulolelako.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 5128 bytes
SHA-256: ae42eb4f0fdbf01532d9fb2b06fa547feebf2cac361a19fbe745175744f2a2fd
font_01_sfnt_off0000ef52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF52 11084 bytes
SHA-256: ac6dd7f32f31e923e501ba0496d64129486cca5dda6aac698751692f11b204e1

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