Malicious PDF — malware analysis report

Static analysis result for SHA-256 c637a27146637408…

MALICIOUS

PDF

70.4 KB Created: 2020-08-06 21:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b96bbc439027f1b174f6f4b60381c9a8 SHA-1: 6cfe20eed496e170163c3186c0e894723be92cab SHA-256: c637a27146637408ee4bdf43a5f4f2a4bad80fb5f751b83a3557ad1c6585efee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with the primary malicious link pointing to a redirector. The document body, though heavily obfuscated, contains the text 'Lacrosse rules pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure.

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=lacrosse+rules+pdf In PDF document text
    • http://jokepareb.islandviewcarpenter.com/uploads/1/3/0/9/130969368/2963083.pdfIn PDF document text
    • http://files.executived-daytours.com/uploads/1/3/0/9/130968988/2051568.pdfIn PDF document text
    • http://files.cuyaramidwifery.com/uploads/1/3/1/4/131406950/2557963.pdfIn PDF document text
    • http://murimo.poly-hist-or.com/uploads/1/3/1/3/131398091/gixizutesorepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4615/6960/files/tozivodipunogikuxadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/buxejofoxofabirud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4729/6924/files/78668910868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/college_attendance_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/air_power_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/gogipazelewugiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/zogupowugobus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/tipeluzasipuvepeliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/3218002446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/16091746555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/55509881453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/35581192168.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB81 4740 bytes
SHA-256: 69645b9582055c6c4ffbf8107ba23bb67aa3488edef4ba2eaf4d391c85dee08d
font_01_sfnt_off0000dba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA8 10144 bytes
SHA-256: 7b7837aa1bfe4abe9f1734ddfdabd2224220f79dab0c5f817059dab5dff26d26
font_02_sfnt_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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