Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c5663a70283fcb…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 01:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 981bbc444b52be41c7d2e34cfc1de18f SHA-1: 732bea16d07ffa33431f7938a2169bfd148400eb SHA-256: d3c5663a70283fcb4c2cd847310eb9d42d882d3af3dec7da7db69b280cf9e216
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains the URL that triggers the redirector. This suggests a phishing or malware distribution attempt using a link farm strategy.

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/pify?keyword=asme+b16.+5+flange+dimensions+in+mm+pdf In PDF document text
    • http://files.iscebs-chicago.org/uploads/1/3/1/0/131070633/zuvororudoz_tawopatunijor_povufugax_senedunovinote.pdfIn PDF document text
    • http://zikigi.smartfurniture.matchpages.com/uploads/1/3/1/0/131069934/modelazomedi-zopezirero-litebak-basetaf.pdfIn PDF document text
    • http://zukuj.shopobf.org/uploads/1/3/2/6/132695569/27fba4.pdfIn PDF document text
    • http://files.janetssheargenius.com/uploads/1/3/0/7/130739309/dukubuxulipapa.pdfIn PDF document text
    • http://files.kevinkopczynski.com/uploads/1/3/1/8/131856380/8a7aab31b82f.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/1/0430/4837/0333/files/vixesuwoxilafuzux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/barron_s_sat_maths_level_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/ramemava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/ad_d_2nd_edition_monster_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6015/7855/files/sat_test_answer_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/muriatic_acid_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/31237146278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/ratejekobivajij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/54985768014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/online_quiz_system_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/lagatufozepawejifoz.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_off00006138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6138 5756 bytes
SHA-256: 863f88a5ec0a7eb34a017d97d1c27b3af94d41e4cf75cac97a4cdf90795faa24
font_01_sfnt_off000074c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C1 10304 bytes
SHA-256: a0b815d0617781abaf2e90dc98eefe26b1a85cf931fb5a41a33fecb072b324fe

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