Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc83064da20bcd75…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 00:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18ce9df57714a79587383f606b0c4b47 SHA-1: 133cbd1408478613524f4b0186e69954ba64ca14 SHA-256: cc83064da20bcd7559893750e53e63a050bde5f0c653581411b74923ceb3bea5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, disguised as a 'Bouldering shoes size guide'. The PDF also contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. 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.
  • 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.com/pify?keyword=bouldering+shoes+size+guide In PDF document text
    • http://nimeto.speedandsprocket.com/uploads/1/3/2/7/132710773/b3d4bf5d0227.pdfIn PDF document text
    • http://files.ezrocks.org/uploads/1/3/0/8/130813108/0b35b56.pdfIn PDF document text
    • http://files.metroeastgolflessons.com/uploads/1/3/0/7/130739023/2952649.pdfIn PDF document text
    • http://files.centerlinemovement.com/uploads/1/3/1/3/131398452/sowosezubeliz.pdfIn PDF document text
    • http://files.sweptpath.com/uploads/1/3/0/7/130739783/9799451.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/1/0431/8471/7979/files/zefududiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8713/3860/files/sujet_brevet_franais_amrique_du_nord_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/bogleheads_guide_to_retirement_planning_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/larubanaridelonaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/12446725127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/mysql_declare_variable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/plano_renfe_cercanias_barcelona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/maxaxosubexomefesab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/1843511910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/akuntansi_syariah_iwan_triyuwono.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_off000070e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E4 4976 bytes
SHA-256: 392d42a598cbb6493fac8ff4d96f0f74ac4708a851898a65447248ceb8b85d3e
font_01_sfnt_off000081cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CF 9928 bytes
SHA-256: f500aa5faee353f8bd67d5b22b33dd591636cd67bc31e2cb87895d6ddbfed228

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