Malicious PDF — malware analysis report

Static analysis result for SHA-256 029ef219a0e4c04a…

MALICIOUS

PDF

813.2 KB Created: 2021-01-07 21:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3434b80715150a072c4696b00966b86c SHA-1: e632561141347565c443513e487543169971f0a7 SHA-256: 029ef219a0e4c04a76e1419c2409957d564c02787750ce562c067bd28c61d34e
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to an external URL. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the presence of a redirector URL suggests the document's primary purpose is to lead the user to a malicious site for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=accelerated+reader+quiz+answers PDF link annotation
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/vunasojubofasovub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404523/normal_5fded590c0718.pdfIn PDF document text
    • https://cdn.sqhk.co/zamupefa/heggQ8U/cara_download_video_youtube_dari_uc_browser_android.pdfIn PDF document text
    • https://cdn.sqhk.co/dasoxitif/yhdrczs/home_defense_zombie_siege_all_monsters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f8e38df1c8d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473651/normal_5fa670109c6ac.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/PjYhcia/ratofemalejikanowopara.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/hExhcSl/printable_word_search_puzzles_online_free_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_5fd3b2fb007b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468871/normal_5fa8a3a0d5529.pdfIn PDF document text
    • https://dubozenerur.weebly.com/uploads/1/3/4/6/134687155/lonoradotatizudilogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5fc368c33aa2b.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/bovenotojitowe/tomudofexiviw.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/nhl_playoff_injury_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/element_compound_mixture_worksheet_high_school.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000c536c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC536C 5188 bytes
SHA-256: 379d2d22f9c2ebc4cd539b96cc005f4877f9890c256e142899d5c5fe47d109aa
font_01_sfnt_off000c653d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC653D 11844 bytes
SHA-256: c310e66169793f6eab0ccc1b02145ebcec39c34adfe15bba667b412a17486c2b
font_02_sfnt_off000c8c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C62 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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