Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2b85814b7273fe…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 23:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b301a0d5afb7dff2bdf71a2b6437eb1 SHA-1: 9695e0698a6abcc0f50c4f8a998ab9fc354a02a4 SHA-256: ab2b85814b7273fe9476ca6230b5cd10ce07348ae31f42d417fbe8810b8e18b1
194 Risk Score

Malware Insights

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

The PDF contains embedded links designed to redirect users to malicious sites. One such link, 'https://ttraff.cc/wb?keyword=industrial%20electrical%20wiring%20seminar%20report%20pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to download further content or visit a malicious site. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm for SEO poisoning or distributing malicious files.

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=industrial%20electrical%20wiring%20seminar%20report%20pdf In PDF document text
    • http://files.divinaartwork.com/uploads/1/3/1/8/131856624/1995723.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/1/0432/9819/3573/files/fijezor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/27782694080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/physical_science_concepts_in_action_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/53466768679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/jobuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/45533099454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/descargar_libro_escritores_de_la_libertad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29121996303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2890/4093/files/97498207835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4462/3768/files/16408348271.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_off000059e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 5504 bytes
SHA-256: 57cab457ea9fa6f87480437ea5fe2f1f9e4ad45cf1aa3a2d81a11db5aaab9281
font_01_sfnt_off00006c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 10164 bytes
SHA-256: a9cf150addcce4c8cc385bba8261b3d4f619af47957a92207cc8caea3d3cb7b9

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