Malicious PDF — malware analysis report

Static analysis result for SHA-256 63dcbcf82912a392…

MALICIOUS

PDF

53.5 KB Created: 2020-08-05 04:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f67f4e31bacce1d020eab0f4c5173046 SHA-1: c4fc5c0a962b4eedf727c72d5deed162c0c162c5 SHA-256: 63dcbcf82912a39244b16093209a87de4eea14ec072c6b9f38fddcdc88e39e23
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a primary link identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'research problem PDF'. The heuristic firings strongly indicate malicious redirection and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=qualities+of+good+research+problem+pdf In PDF document text
    • http://files.bangorhs.org/uploads/1/3/1/3/131380213/8662972.pdfIn PDF document text
    • http://mitotopor.phenixsalonwestdenver.com/uploads/1/3/1/0/131070767/d9fbc580d1917a.pdfIn PDF document text
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdfIn PDF document text
    • http://gitodokin.bethlehem505.org/uploads/1/3/1/0/131070722/81f0f3bf.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/1/0428/9835/8432/files/zemeletitofugawekabol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/voxaxuzipotomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2426/files/xijelunibisijonaniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/zuzomewefofelabuzekifuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/39266917052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21154843933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/ropibizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/kexepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9302/3133/files/buriwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/blender_animation_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/bezegagevuzigefaxipimaluk.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 8

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_off00009223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9223 5772 bytes
SHA-256: 304be4db3a8e5313f7a18bc91bff6ba094fbb9f53dc2587ad4cd56ed6d575831
font_01_sfnt_off0000a59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59A 10452 bytes
SHA-256: 80514c5474700f0655ea4d95d6f859cdd854efe8a1979d5cca336e0666a70b59

Open this report in the interactive analyzer, or submit your own file for analysis.