Malicious PDF — malware analysis report

Static analysis result for SHA-256 e301dd446a227d7c…

MALICIOUS

PDF

60.2 KB Created: 2020-10-06 12:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfbf346488e049f1abbb7419f77dca62 SHA-1: 59b15e4c51d98fb1fc7b119e4214c07740de6aab SHA-256: e301dd446a227d7ce002d4a45778da3e26c2c4819700ba9bdd0f6268068b9d6a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the URLs, suggesting the primary purpose is to lure users into clicking these links. No scripts were extracted from this sample.

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.
  • 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.
  • 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://cctraff.ru/pify?keyword=abbott+and+costello+radio+show In PDF document text
    • http://bowopivu.edmotivate.com/uploads/1/3/1/6/131637309/6198845.pdfIn PDF document text
    • http://files.ccscatu.org/uploads/1/3/0/7/130775677/jowenejinuze-nujibo-belokokana.pdfIn PDF document text
    • http://nuwuxa.inthemakingtremp.com/uploads/1/3/0/7/130739561/d0b952d8c7b44f9.pdfIn PDF document text
    • http://files.poorwarren.com/uploads/1/3/1/3/131383917/ac3cd133bcb.pdfIn PDF document text
    • http://jobukit.postpartumslimdown.com/uploads/1/3/0/7/130775422/kemisirokusiv.pdfIn PDF document text
    • http://nuzizogi.wixparish.co.uk/uploads/1/3/1/3/131398430/gufijogad.pdfIn PDF document text
    • http://files.toddnelling.com/uploads/1/3/0/7/130776656/romupolakedumofojino.pdfIn PDF document text
    • https://site-1037175.mozfiles.com/files/1037175/26038688150.pdfIn PDF document text
    • https://site-1037203.mozfiles.com/files/1037203/vidunerilefuxopujesulima.pdfIn PDF document text
    • https://site-1039478.mozfiles.com/files/1039478/ratesowojelolitebeduzuvu.pdfIn PDF document text
    • https://site-1043928.mozfiles.com/files/1043928/dipebajaxebakolebava.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2811d9b9-12bf-41ec-a5fe-55780d28e2c3/pajanijumosujobuf.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 7

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_off0000aae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE7 5248 bytes
SHA-256: 72dfdbdc2b2f07ad8dffbc6a3f79df25935ee7900f3b1237648db040fb91376b
font_01_sfnt_off0000bcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC5 12284 bytes
SHA-256: 9dfe9dc6cd360b0d14f9eff8f6eeec5a3e6ce2a7f31789678ee1ce3407ad6de8

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