Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ebf5d74513444c…

MALICIOUS

PDF

37.1 KB Created: 2020-08-08 13:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dae5898077151436192643c62194cd46 SHA-1: 7dc15d4ed17e40ad14e2ce1828c46a83a05f1dbc SHA-256: 34ebf5d74513444c78328059570268843fa296f481674a374efa41b1e2ee1c71
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to external resources, which is indicative of a link farm designed to obscure malicious redirectors. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to ttraff.cc, a known redirector. The document body, though partially corrupted, contains keywords related to free PDF downloads, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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.cc/wb?keyword=english%20grammar%20tamil%20pdf%20free%20download In PDF document text
    • http://wegoru.americastrumpet.com/uploads/1/3/0/7/130776791/wabab-namogawemufere-borenipakof-zufeforumubu.pdfIn PDF document text
    • http://files.riverviewchurchcoeymans.com/uploads/1/3/1/6/131606818/rigazupe_popigalegibewes.pdfIn PDF document text
    • http://bojukal.maggiemcconnell.com/uploads/1/3/1/4/131453540/8923932.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://cdn.shopify.com/s/files/1/0437/7932/6103/files/juwaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1575/7214/files/wonisobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9712/9109/files/48465281371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/xewanasulirutakasoloribej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8943/6580/files/fupepoguvuxufanaladuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/sugidode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/87875549670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/dogikudogozozunuduvosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/blessed_assurance_lldm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/bewenedimuvutifitijefeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8806/0320/files/lufafus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46AD 5292 bytes
SHA-256: 34ccad6e00c1f263d905fe624e8449b6f53a5b0d607e07ad015e9ff665a4e6bd
font_01_sfnt_off00005889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5889 9572 bytes
SHA-256: e11d6806c38bebae21b52bd550d87c91d0429c5dca6df207543e0d525b8636da
font_02_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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