Malicious PDF — malware analysis report

Static analysis result for SHA-256 146ff9d06e1ac2a2…

MALICIOUS

PDF

37.6 KB Created: 2020-09-19 13:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ed45823a93e981f03ebae62d98808ba SHA-1: 686624c0542523469436f6727995dbb9767a1240 SHA-256: 146ff9d06e1ac2a2cbdbddce44693999327911d31af8c38010d9799a26f1a51f
192 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting, and one specifically to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a '24 hour grossmont class schedule' and a URL that mirrors this, suggesting a lure to trick users into clicking through to malicious content. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=24+hour+grossmont+class+schedule In PDF document text
    • http://files.naturallyyoursbyisabel.com/uploads/1/3/1/1/131163635/vorij.pdfIn PDF document text
    • http://files.glutenfree-woman.com/uploads/1/3/2/6/132696060/guxenatonugut.pdfIn PDF document text
    • http://files.now-hope.org/uploads/1/3/0/7/130776673/mitawarezub-retemepaxaxas-mosiduga.pdfIn PDF document text
    • http://nifine.empirecoffeecompany.co.nz/uploads/1/3/2/6/132682156/7f527d061674d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d83658f8-5531-4212-8faf-895d09c50c8e.filesusr.com/ugd/e948c1_b0a5102770fb4759b10a33213d6b1f73.pdf?index=trueIn PDF document text
    • https://49142cac-1926-4797-afeb-6b9a2b29b14b.filesusr.com/ugd/d6af85_ef58c50d2f5a49f3b5e11250be28cd7b.pdf?index=trueIn PDF document text
    • https://290d28b3-a959-4170-b80e-5ffe959b65a2.filesusr.com/ugd/735189_12094d41bf054669a7b7a18c7b6b9ed8.pdf?index=trueIn PDF document text
    • https://912ea0fa-dba7-459e-a279-376bb4f5f392.filesusr.com/ugd/7a7fb1_2ba7d6e90d7d4a219b69742c9d1ebea6.pdf?index=trueIn PDF document text
    • https://4e86e19d-59ae-4561-9760-db0e0232d838.filesusr.com/ugd/1a94e8_da7da655ca3a4d46a06c9f6af05c3123.pdf?index=trueIn PDF document text
    • https://6b020ebd-b3c4-450f-b9eb-e5e040e5cae5.filesusr.com/ugd/8bc2a6_817d6b5a088146bb8a01649b976f888e.pdf?index=trueIn PDF document text
    • https://50172aee-2df2-4f86-9532-8644110befb0.filesusr.com/ugd/0b46e6_593a787b654a4270a4be1a749f6d256f.pdf?index=trueIn PDF document text
    • https://b4619b8c-d19b-451b-8736-e687500fa1be.filesusr.com/ugd/e3c460_5f7f9ea9d00f4f73ae29a98f166479ef.pdf?index=trueIn PDF document text
    • https://b1ad1fe0-d424-40d1-8884-d5b5d907a59d.filesusr.com/ugd/6fd45c_7601759b149340aa8c5f1f8d76f277f7.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6312/3874/files/97874640588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3109/3397/files/bsac_incident_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/23516660131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/vafite.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_off00005439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5439 5480 bytes
SHA-256: 839b8ad8406a992d270d9377d332a3b8251ce763119651e4799c9a02def3308e
font_01_sfnt_off000066b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B8 10236 bytes
SHA-256: 2e71c5ca65797528977b7bf27d47314f099c84b109acd21f5dfdf4a36b9004d9

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