Malicious PDF — malware analysis report

Static analysis result for SHA-256 012dad3b31d9f93c…

MALICIOUS

PDF

55.8 KB Created: 2020-08-22 17:04:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c240cc8648a2b78cc97598698fa67f1d SHA-1: 597eadee40d3a2d0e11e7931baa242b8e0b701ef SHA-256: 012dad3b31d9f93c58459c7e3e784f4062f463d1a2db62e89b1271eb52b7cdb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is likely used to host or deliver a secondary payload.

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=biomedical+optics+express+author+guidelines In PDF document text
    • http://files.conceptarianworx.org/uploads/1/3/2/6/132695388/wekifixik_dovidise_zimopepatasiro.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/1/0448/9006/3003/files/minecraft_house_planner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2043/5112/files/avast_for_windows_10_offline_installer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/6365284760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/52161578834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9750/files/electromagnetic_spectrum_worksheet_with_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1326/files/bacterial_endospores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/film_score_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/wulofuboluwimugewatifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0536/1821/files/sikasalixuruxora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/5014194155.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 4

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_off00009b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2B 5604 bytes
SHA-256: cbe334f9a9ec9e1911a5bd4b48e56bd24fa5504113ea6e0d2d00f13a2d447281
font_01_sfnt_off0000ae10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE10 10628 bytes
SHA-256: cbe04a4f41a7c732987567e8e089794f7646ce532c6cbcab944f8768e38caebb

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