Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8cbcb03fee5730…

MALICIOUS

PDF

82.4 KB Created: 2020-10-21 05:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 80e05bb22956bf23f8fd40122324b9ba SHA-1: f2ba6156aaf6d5db0ada5e2e3c961742c61f19c3 SHA-256: 2c8cbcb03fee5730b1462aa8141fdc592d4c4d581d77cc7ebe8390d3316855da
194 Risk Score

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.me/123?keyword=listeria+monocytogenes+meningitis+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8704d4a8fb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f8b39ba8bfb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5f8bf1d9d5ae9.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/1/0462/3876/1109/files/awesome_cheap_android_phones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8131/1418/files/9841028890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7131/4352/files/awesome_android_ui_libraries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/offline_map_and_navigation_premium_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3318/8762/files/rexroth_linear_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9089/3730/files/87090952764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2226/6780/files/88205477645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/gigebetamen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/launcher_galaxy_s8_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/proform_995_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7172/9564/files/manual_citrus_juicer_glass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/odia_english_word_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4155/3046/files/contoh_proposal_penelitian_kualitatif_lengkap.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_off0000f7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BF 5488 bytes
SHA-256: 832c806dfef9d225932aee717f9acb12fec236ef6abcd29537131371edf3adb8
font_01_sfnt_off00010a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A56 16348 bytes
SHA-256: e4d84ba974e27c7ba9506053f1794b77a6143476d9b5f051e7db67039c475bb5

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