Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee1328ed1895a82…

MALICIOUS

PDF

38.1 KB Created: 2020-08-03 11:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fd4449ebcc8cb4f1924d5a7d64c4f04 SHA-1: 348da9841f9bc6d684ffa1a224270b6631bdf481 SHA-256: 7ee1328ed1895a82529d291fae0da3231468ed8ec7806e8e1ac7acb2d82b1be6
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to educational worksheets and a URL that appears to be part of an SEO link farm strategy. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards an attempt to redirect the user to a malicious site.

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=addition+and+subtraction+word+problems+worksheets+for+grade+1+pdf In PDF document text
    • http://files.newlookwindowcleaning.co.uk/uploads/1/3/1/1/131164479/kosulugotinivo.pdfIn PDF document text
    • http://files.advancedanaerobics.com/uploads/1/3/0/9/130969555/davam.pdfIn PDF document text
    • http://files.rol-ministries.com/uploads/1/3/1/4/131437472/rokiwozipazolisi.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/1/0438/6809/4629/files/r_android_gaming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/83668034770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/rukexup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11286786524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/80758516954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5621/files/13683004959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8121/1802/files/vuvumoxanenuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/74756018726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/jaxesutujajufofirog.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_off000054d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D0 5904 bytes
SHA-256: 4116edf860c8c8f25a3316e21e43c6602853a4194fde4aa52074ca130cafe23f
font_01_sfnt_off000068d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 9996 bytes
SHA-256: 5bfcd5a6671ddce6506ebcd80a218c6ea550383e3d14b59501fa5072cd42567e

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