Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a764f8a51116a0…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 13:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d082f99422f2aa5ee827c493224d809e SHA-1: 713355c1ff4ed2a0c44d78438306b82e758b076d SHA-256: 68a764f8a51116a0a584cd3cff43b5bcb082c0c90a6f2863c61fd57e0849fc6a
194 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to its use of redirector links and SEO spam tactics to lure victims. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn likely leads to the download of further malicious content. The presence of numerous external PDF links further supports the SEO spamming attack pattern.

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.ru/pify?keyword=cambridge+primary+mathematics+stage+4+teacher+s+resource+pdf In PDF document text
    • http://vofaliziv.counter-recruit.org/uploads/1/3/1/8/131871980/gefepumerozujozukugu.pdfIn PDF document text
    • http://files.workwithstandout.com/uploads/1/3/1/4/131437487/gagodalov.pdfIn PDF document text
    • http://files.puremsm.com/uploads/1/3/1/8/131871593/xelanoluw-reseletorivo-sijokufi.pdfIn PDF document text
    • http://files.stincrowvoden.com/uploads/1/3/1/0/131069978/bafefeludebosib.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/1/0433/9014/0581/files/juduvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/72092386590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/tosesosozajatowoluvali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/39476116897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/java_script_countdown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/neopets_site_themes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6196/0091/files/75553300895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/ramilabometobodoguzizux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/l_argumentation_juridique_stefan_goltzberg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3988/1373/files/milusewenosiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/8063249862.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_off0000968a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x968A 5772 bytes
SHA-256: 1e0558e699e8f0fece7d31ec846157b6160825c3306a6bc17e9ca07ac23686ff
font_01_sfnt_off0000aa0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA0D 14044 bytes
SHA-256: 8bd8b1937212488d947ba2718916f912ad447fb8d09a946921222c71bb912914

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