Malicious PDF — malware analysis report

Static analysis result for SHA-256 08beca824d117b7e…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 06:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e10f43f47ad284075d98bc2e7a48744e SHA-1: 33d806781a3c8d0d3bd0a63e8c647224b2ceaafc SHA-256: 08beca824d117b7e7034b78df20f28ba8c0b5055b194995f58e10bff3f5e51c3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=ocp+java+se+8+study+guide+pdf'. This redirector likely serves to obscure the final malicious destination and potentially engage in SEO-based phishing. The presence of a large number of external PDF links suggests a link farm designed to attract traffic, with the primary lure being a "study guide". No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

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://ttraff.com/pify?keyword=ocp+java+se+8+study+guide+pdf In PDF document text
    • http://lejuxoxu.frosttechlab.com/uploads/1/3/2/6/132681352/9194033.pdfIn PDF document text
    • http://files.thesurvivant.org/uploads/1/3/2/6/132695294/sobunisekupetusamuni.pdfIn PDF document text
    • http://files.firstbaptistwesterville.com/uploads/1/3/0/7/130739742/karodolo-ribipozinedal-zobop-maxodigu.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/1/0433/0687/7080/files/14985018959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/fuxesezujuloniki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/goanimate_bring_back_lil_petz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/37562058766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4655/8113/files/burok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7679/9903/files/poxefopigawevuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/78823753612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/15084140664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/black_eye_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/gesagonebeki.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 1

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_off000054bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54BC 5652 bytes
SHA-256: 3d64742e1e6434f1054f0df3dd739d2a47c7f729d0df94aee95e02186aa8c831
font_01_sfnt_off00006827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 10648 bytes
SHA-256: 94f0f936d8b6fc5878122c1975bdf644c761f2485c18a558d182f8e818225ec1

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