Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6ead2b1021ab57e…

MALICIOUS

PDF

52.2 KB Created: 2020-07-19 16:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfdc14a6a9907a84be76d19260368e30 SHA-1: 8b868c541541e8509aeceb1d575bb979d1dbe002 SHA-256: a6ead2b1021ab57e4324743d9afecea828db8abd5544109d934c49db686a0c0f
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirectors and potentially malicious PDF files. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is designed to funnel users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the embedded links leading to external resources.

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=bluetooth+server+socket+android+example In PDF document text
    • http://files.penwoodbrands.com/uploads/1/3/1/6/131637056/fosipobuda_tizojibibepabil_xuzomeb.pdfIn PDF document text
    • http://files.stevendavidtorres.com/uploads/1/3/1/4/131453387/sesizizete_piniripi_nojupodogi_sasuzamazora.pdfIn PDF document text
    • http://files.jerseyguidedtours.net/uploads/1/3/0/7/130738741/2ad028485.pdfIn PDF document text
    • http://files.atlantasteinwaysociety.com/uploads/1/3/1/6/131606550/wugavawopilen-besezasifijavax-movedaxepefag-zajuvebozoka.pdfIn PDF document text
    • http://files.madebyloulou.net/uploads/1/3/1/8/131871891/59bfb6ba928ffb6.pdfIn PDF document text
    • http://files.nypa.com.au/uploads/1/3/1/0/131071137/nasavavirit.pdfIn PDF document text
    • http://files.childsafechildproofing.com/uploads/1/3/1/0/131071056/7011162.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lovifame.files.wordpress.com/2020/06/logofutaxizizixamu.pdfIn PDF document text
    • https://fulafemep.files.wordpress.com/2020/06/rejidekaniwodezav.pdfIn PDF document text
    • https://bavorekivaso.files.wordpress.com/2020/06/sofabepob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/neziporoxunanakorufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5356/2526/files/fosov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/56841367936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/71210220225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/serezidebibetujirujenex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/barobidimawemebit.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 8

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_off00008221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8221 5436 bytes
SHA-256: 56985daf6ed66deb2759eeae735ea30fec85fda0a7104154ee13430ad103f3ed
font_01_sfnt_off00009477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9477 15100 bytes
SHA-256: 9c810fe3f7e337f9feb5326db3067a732b1e931367a9681a95d758323fc66849

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