Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a386a5fc96d0605…

MALICIOUS

PDF

43.5 KB Created: 2020-08-11 07:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6ca42c6ddf98eeb847efca86b8ed2df SHA-1: a7e59d2825b1357b015846d5aa833f69dcc39902 SHA-256: 6a386a5fc96d0605391edc63c97dfa42fd448d91ae3f26af430b56f324220f14
194 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially obfuscated, suggests a lure related to a 'Barcelona pavilion plan pdf'. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links points to a link farm or SEO abuse tactic.

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=barcelona+pavilion+plan+pdf In PDF document text
    • http://files.customweddingringsmelbourne.com/uploads/1/3/2/7/132710780/senexevuza_senalupumi_nijuvojizasojix.pdfIn PDF document text
    • http://files.fitzgerald-and-co.com/uploads/1/3/1/3/131383493/somijomuf.pdfIn PDF document text
    • http://files.mbirds.ca/uploads/1/3/2/7/132740951/fimojinesig.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/1/0430/8818/3447/files/gukelobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/12642785143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/57857825118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0343/6446/files/8593531239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/14406263454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/canon_6d_ii_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/muwefumabatid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/minecraft_1._8_8_shaders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1154/4987/files/chacun_sa_route_partition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/48285342065.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 3

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_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 5080 bytes
SHA-256: 150c6530663e5e14645cbcb015c4284a1412f4aa075028af34bb2c25a5af11d3
font_01_sfnt_off00007c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5A 10176 bytes
SHA-256: 2b7dfe286e1029d9a0174396f1272080687f24a041e9d0fc482d29611cd76b1f

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