Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa1109837edbb1c…

MALICIOUS

PDF

38.1 KB Created: 2020-07-31 13:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47e46f5a9e06cb5c1eb2b110f1f6c671 SHA-1: 90ede09628419694d2228fc07905509133d15fb5 SHA-256: 4fa1109837edbb1c37f62f0dfb2b227dac1e18aed6224e349ba6063efb38ee9a
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to sheet music, suggesting a lure. The presence of a link farm heuristic further indicates an attempt to drive traffic to external sites, likely for malicious purposes.

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.ru/pify?keyword=canon+in+d+piano+sheet+pdf+easy In PDF document text
    • http://files.iowamavericks.com/uploads/1/3/1/0/131069992/521b1.pdfIn PDF document text
    • http://files.clemsongammaphi.com/uploads/1/3/1/4/131453823/1e0ee.pdfIn PDF document text
    • http://files.acmechassisfactory.com/uploads/1/3/0/8/130813427/xosemizifu.pdfIn PDF document text
    • http://files.heartlandwestfargo.com/uploads/1/3/0/9/130969658/1d37df34.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/1/0429/5327/7589/files/26439884613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/netozidisegenanima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/76961327771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/lezizegalakanaxatusoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/juxulabikobekirorimisijuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/xawewumaragafeletuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/22793501800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/juwitapuzupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/18392885401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/87413157313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/1669848530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87960197539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/35707056620.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_off00005656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5656 4912 bytes
SHA-256: 4172b8680a92525ee1d6c77fd893f1e64690675c8ba69e2301d8f455aa35dfe7
font_01_sfnt_off00006717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6717 10120 bytes
SHA-256: b49e627cb3cfd4123394825d8a7096b37144a9f9890bad35e1bf89ca8fa02e02

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