Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41bda85905065b1…

MALICIOUS

PDF

66.4 KB Created: 2020-07-31 07:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86c12cbd05b5e24364f00a86f04e1b5f SHA-1: 09bdee141e71515769aa51eab8897adfc1b762d1 SHA-256: d41bda85905065b18463a2fd1b37e6bb46ed47bac0a766e5361ea794dd6056bb
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Centroids of plane areas pdf', likely a lure to make the document appear legitimate. The primary malicious IOC is the redirector URL.

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=centroids+of+plane+areas+pdf In PDF document text
    • http://files.lauracrosskey.com/uploads/1/3/2/6/132696030/sosatosavo_bunoximur_guvesitexabe_bifujipovo.pdfIn PDF document text
    • http://files.jaxsinglesgolf.com/uploads/1/3/1/3/131379301/91dd37e6f7d.pdfIn PDF document text
    • http://files.wrarodeo.com/uploads/1/3/1/1/131163896/vorax-zojexuxatu-lasej-nomijivo.pdfIn PDF document text
    • http://files.lakeodessaarts.com/uploads/1/3/2/6/132680890/joxosaroj-zefedilawuxubo.pdfIn PDF document text
    • http://files.thesanctuaryatmn.com/uploads/1/3/1/8/131856184/d83262d07.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/1/0436/1230/7618/files/wigifisop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/58347772429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/fugutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/bebixaweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/57959404492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/tipunaxowadugipuxufefejol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/degitibemanozagaworapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/30645481940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/sirekejam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/47315662332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/fubexesarejil.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E3 4844 bytes
SHA-256: 97cbc084a277efa224c5752eee03fde86052a8be73e0ea84c543c90678bfd532
font_01_sfnt_off0000b364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB364 16320 bytes
SHA-256: 00a75efdb675be4876fc13d28e76a1afd13a2bf82fe830aa3d5edbbd1c0616cc
font_02_sfnt_off0000e648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE648 16168 bytes
SHA-256: 7deeb3a28e7e7d0830673a67242f829955577b57a7a0c69b01897d491e1536c9

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