Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac1749e4a1d7936…

MALICIOUS

PDF

39.1 KB Created: 2020-08-20 23:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2011834e3df1c0672be7b885d67b57e SHA-1: 4dcdcb287574272e8b2beb26b4cb7f28fe72f25f SHA-256: 2ac1749e4a1d793695d326c39b484b9a1cc5a7313df7dc0ef89e565bb011cfd2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=1080p+wallpapers+for+android+free, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to '1080p wallpapers for android free', suggesting a lure to trick users into clicking the malicious link. The presence of a link farm and a malicious redirector indicates a phishing or social engineering attack.

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=1080p+wallpapers+for+android+free In PDF document text
    • http://wuwakuse.aitnde.com/uploads/1/3/0/8/130874493/ninanoti_tegejikawosabur_dirudezigar_sofud.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/1/0434/1982/8386/files/kojojefolepidopuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/40768157794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/equilibrio_acido_base_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/widelojozoxasuwum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/felamisakawubibaxejurelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/rirak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/34069745868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/biblia_reina_valera_cristiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/vumedisipuvejonetovovum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/66847756679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/nukag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8204/6869/files/86585831977.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_off00005a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A67 5420 bytes
SHA-256: 41380de192b162d8505fa0f24c7c0d51bf8fb57f3b6ceb119e9107597dfca93f
font_01_sfnt_off00006cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF2 10240 bytes
SHA-256: 49116d50a922d1fad8ba2422b2514c9e8db04a66b1c6d6678f19d6f8b2e7259c

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