Malicious PDF — malware analysis report

Static analysis result for SHA-256 09634146ea5a6621…

MALICIOUS

PDF

61.3 KB Created: 2020-07-29 20:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbd7f82a28d00e189758739fc8795367 SHA-1: 0904a9992677269e947d2c42cf211e60af2b5159 SHA-256: 09634146ea5a66211146bc100dc1f8e32bfde2a4dda68e74d274e93ca05d1c60
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, many of which point to a redirector service. This infrastructure is designed to obscure the final destination and potentially deliver malicious content, masquerading as legitimate downloads. The ML classifier strongly indicates malicious intent.

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=tablatura+concierto+de+aranjuez+pdf In PDF document text
    • http://files.sophiedesousa.com/uploads/1/3/0/8/130874125/dalukesifogodeti.pdfIn PDF document text
    • http://files.medisysprepares.org/uploads/1/3/1/1/131164446/lapuzusexagokaf.pdfIn PDF document text
    • http://files.giscnr.com/uploads/1/3/0/7/130739996/60ec69ef.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/1/0431/5407/9910/files/pokuwujino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/nufofosapilakunemurezer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifivejeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/tikogedewikizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/19893619526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2867/files/liranomuzipolobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/96767805406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/61185205251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/miwinidafupupuxutiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/pitik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/xotopawilopimapaxibisetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA731 5068 bytes
SHA-256: 4d4265fafbfd8ce09131cca06822bf67fc6f17b007cb455633b070b3d0a248ee
font_01_sfnt_off0000b876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB876 15544 bytes
SHA-256: a41fda9a1898d451762325d83b7d17eac6dd376ed000e978d59a863cad5cd75a

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