Malicious PDF — malware analysis report

Static analysis result for SHA-256 051a379c7de8755b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-15 00:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76c2ca0ecd85e6434891b39934e71bbf SHA-1: c50e26dc5b0cf4acbaa90cfcfbf52ae1a948bf7e SHA-256: 051a379c7de8755befab3db36bc08edd45d434fa8a75544f0d601087a2806f80
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, including one pointing to a known malicious redirector. The document body and heuristics suggest a lure for downloading cracked software, specifically 'Touch VPN premium cracked apk'. The presence of numerous links, many leading to Shopify domains hosting PDF files, indicates an attempt to create a link farm for SEO purposes, likely to drive traffic to malicious or scam sites. The primary malicious IOC is the redirector URL.

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=touch+vpn+premium+cracked+apk In PDF document text
    • http://ligovexes.jcottergallery.com/uploads/1/3/2/8/132814930/ludujo.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/1/0429/6772/8279/files/57675801757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1432/3356/files/wuropegufixolowijosela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/muxikabuvisevirutogoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1357/6603/files/87806708676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3238/3381/files/ct_ghp_trc_tuyn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/fizimitizopegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9415/5169/files/85444423601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/vuwipakaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/baduvu.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 1

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_off000066b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B7 5176 bytes
SHA-256: 51d2722bc48fd4d057607552948eb232956f5a7c0a57d1ae32fbe0969202eafc
font_01_sfnt_off00007829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 10916 bytes
SHA-256: 499311faa5d2f251584ce140c061bbd28db5bdb5969ed2f591a5302136736952

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