Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fbaaa0a0e601830…

MALICIOUS

PDF

40.0 KB Created: 2020-08-23 08:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e88fdf42934772236f56d15c78baa0ea SHA-1: 11328463062d59ab9b7e34f739c4e1b1cd350dd0 SHA-256: 4fbaaa0a0e6018305544e4b2bdd52fce60ce772dc7c01555f4b00285bc37c84d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content is designed to trick users into believing there are changes to payment instructions, a common tactic in business email compromise attacks. The primary malicious URL identified is https://ttraff.ru/pify?keyword=professional+clearance+letter+template, which likely serves as the initial point of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://ttraff.ru/pify?keyword=professional+clearance+letter+template In PDF document text
    • http://jofejol.croberts100.com/uploads/1/3/1/8/131857114/rubelumeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/concierto_de_aranjuez_music_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/nebomukinivaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/21759283171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/google_adwords_certification_fundamentals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0822/7490/files/86319135004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/62736692911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4767/3253/files/39524962687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/cassio_wk_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/59658787013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/bsc_agri_1st_sem_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/powerpoint_templates_free_2018_green.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/kukirepegovutuduzatexuvij.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 2

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_off00006025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6025 5164 bytes
SHA-256: 3e86fdc28fae8e4e5ac6279ec47cde81429b9cac5e57a625299a30f76f09ff2d
font_01_sfnt_off00007198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7198 9868 bytes
SHA-256: 154906e5d60121b52a1b8a8352228de106599eddc7c4e7353d58965dba77d57e

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