Malicious PDF — malware analysis report

Static analysis result for SHA-256 7275e505855b9bc4…

MALICIOUS

PDF

121.7 KB Created: 2020-07-28 15:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cbd15507238a73890c2f6d9728eec1c SHA-1: 469738cf8b969bbb8e1cc0610779afeae0d45ef3 SHA-256: 7275e505855b9bc4fa84642d3307b034a4689725dc2f3c8b60449b5fa10935ba
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain metadata related to 'Anime slayer 2. 2. 4' and 'wkhtmltopdf', suggesting a lure or disguise. The high ML score and the presence of a link farm further support the malicious intent of redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=anime+slayer++2.+2.+4 In PDF document text
    • http://files.susieunderwood.com/uploads/1/3/1/4/131455337/8146543.pdfIn PDF document text
    • http://files.frenchquartersalon.com/uploads/1/3/1/1/131164556/d8dacf.pdfIn PDF document text
    • http://files.desertbeagle.com.au/uploads/1/3/1/8/131871984/fatas.pdfIn PDF document text
    • http://files.valeriesaltacupuncture.co.uk/uploads/1/3/1/0/131070535/1455029.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/1/0435/3504/0664/files/najulamob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9430/files/minepovavevikax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/tepaxawederunuloturogasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/waledokidoluzaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/zujigofopewule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/6641394715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3923/3960/files/nofepoliwefus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/fosapegufowuzeribumin.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off0001ac10.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1AC10 24776 bytes
SHA-256: 27981304d7dcfaea47e303a43a78594662e81863bcd73001763ed235af319c39
font_00_sfnt_off00010879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10879 32072 bytes
SHA-256: 44f052dc8b583343c6905b7258ff873f0f049d95dac9f7c5c235e8722c037839
font_01_sfnt_off00016c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C15 4772 bytes
SHA-256: 77ab47f75db036f4e479329cab18ea18d9983cadb3f92d43a9844666bff4fdf7
font_02_sfnt_off00017c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C1A 15392 bytes
SHA-256: f07e40d5ee17d82e1a10666c4d39729a8072f8bab50969485eaca7664f512947

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