Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e1331097ab9c79…

MALICIOUS

PDF

38.0 KB Created: 2020-08-14 20:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6245eaa384b965b1efe1fb205a0a242f SHA-1: c4ead873c77762cb7c6acdfb2c75fba02becadf1 SHA-256: 11e1331097ab9c79d0914559436b40071461ab8841d71f734826820265077a1f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The document body mentions 'Anthem blue cross medicaid prior authorization form' and includes a malicious redirector URL, suggesting a phishing attempt to harvest credentials or distribute malware. The ML classifier strongly flagged this PDF as malicious.

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=anthem+blue+cross+medicaid+prior+authorization+form In PDF document text
    • http://files.matchdayaffairs.com/uploads/1/3/0/9/130969352/badiloxunorofukojita.pdfIn PDF document text
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.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/1/0430/3749/1357/files/10309320334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/accounting_101_terms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/80608501109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/fisubokatebesaxujelupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9018/files/nazizumijulurat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumatuzonew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/12611060327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/desufez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3697/8850/files/trastorno_alimenticio_en_la_adolescencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2420/3424/files/4010878289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/lufemugewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1216/0679/files/laxiluzug.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 8

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_off00005569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5569 5576 bytes
SHA-256: ede092240f1c5b43ec2f0c4770e0e7fc8991b5d713a9ff4f2f4d604a4e5fc3ce
font_01_sfnt_off0000682b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 10204 bytes
SHA-256: e92431c3dc095a0d4b18d3c2750575f423d04318c8a8fc0af7ecf9e85978cf41

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