Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ba444bd32ff41a…

MALICIOUS

PDF

53.2 KB Created: 2020-08-01 22:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c5282ea629e5837412e2d5bc46662f0 SHA-1: 2fd6a2ae8f444b2c436701b2dd61a5c27ff1f5b4 SHA-256: 11ba444bd32ff41af8b1c28dd9794518621eadfd2ad2e32e84bf133c77a3f3d5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The ML classifier strongly indicates maliciousness, and the presence of SEO-optimized PDF links suggests a phishing or scam campaign aimed at driving traffic to malicious sites. The document body itself contains obfuscated text and the primary malicious 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.ru/pify?keyword=seven+deadly+sin+lust In PDF document text
    • http://files.wesleycollegecollective.com/uploads/1/3/0/8/130813906/zezuxitamepofe-kegoniguwufoxe-jokojevakilu.pdfIn PDF document text
    • http://files.reflexologytampabay.com/uploads/1/3/1/6/131636990/xumefesazudobo.pdfIn PDF document text
    • http://files.bigpowergame.com/uploads/1/3/2/8/132814024/tudiguvexit.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/1/0433/0687/7080/files/zimupumunilojoduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/vesamuzofoxadikedifowunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/wezuwisedajetunenola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/75491028395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/44696036251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/sasotumumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/91217183212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/14088069566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9041/9620/files/61467649191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4773/9811/files/wigiwinifitirobepuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3880/8991/files/11386454643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2230/2888/files/75220461635.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 3

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_off0000925d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925D 4988 bytes
SHA-256: 74963b9e9e1481010c01b40ca00d185e7be79a55045a66412a12f1a1a2421797
font_01_sfnt_off0000a374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA374 10668 bytes
SHA-256: 2c8f755aa84088502993ab50ae8c9ac66737b36e3d500f76d7690228a26e0ad3

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