Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c7c1652caa531f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-06 09:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a3ac8a4794eb3b8831a4ca94e61618a SHA-1: 29a14f3b2f721f4b2f7336dd8769e749e7394981 SHA-256: 92c7c1652caa531ff7fa5c72b6d64482b73b7ce739f56ec685de727f7a1543df
194 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'B. sc nursing syllabus' and includes the malicious URL, suggesting a lure to trick users into downloading further malicious content. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed for SEO poisoning or to obscure the final malicious destination.

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=b.+sc+nursing+syllabus+pdf+mgr+university In PDF document text
    • http://files.sydneywaterpoloyouthfestival.com.au/uploads/1/3/1/8/131871433/januxig-sunoziri-lutala-dozanugemov.pdfIn PDF document text
    • http://dufugu.holidayrentalsinsurance.com/uploads/1/3/2/6/132681670/c5405e7b5.pdfIn PDF document text
    • http://files.180degreefinancialcoaching.com/uploads/1/3/0/9/130969744/d6ced7.pdfIn PDF document text
    • http://files.jenbuffy.com/uploads/1/3/2/6/132682882/simipit.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/1/0432/2449/8343/files/navovaxagit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/18043465958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/matlab_nearest_neighbor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/27450691807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/kezakerobesat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/45150113401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/2923505147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/81044835311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8921/6167/files/72514512551.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 7

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_off00005bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 5860 bytes
SHA-256: 61b28bd141f5329f49b6c3256e6826f053913c308569a18a545ae19cd2b52cd1
font_01_sfnt_off00006fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBB 14148 bytes
SHA-256: 494101617e377aaecdf45f04affe89c7a3a7f7e3806e67f7b79c95e179a82c9a

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