Malicious PDF — malware analysis report

Static analysis result for SHA-256 8443df1b3d28e45f…

MALICIOUS

PDF

744.6 KB Created: 2020-08-10 03:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4377bc46b2ae2699a57215fe272a11bf SHA-1: b3d2f8132d2153729b1821177d9ec259119afbc8 SHA-256: 8443df1b3d28e45f92719b4e0dcefd1facb3c9389f95280121520d4f020b754c
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by heuristics as a redirector for phishing or malware distribution. The ML classifier also flagged the PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to trick users into downloading further content or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9434

Heuristics 4

  • 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.
  • 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=read+the+iliad+online+pdf In PDF document text
    • http://files.onegoverningbody.com/uploads/1/3/2/3/132303406/posupekakijuz.pdfIn PDF document text
    • http://files.confessionsofanunderachiever.com/uploads/1/3/0/7/130740257/98061e9be39e.pdfIn PDF document text
    • http://files.foreignpresscomics.com/uploads/1/3/1/8/131856279/daluguxizazo_xixip_zeboregijizip_raxanuguvafer.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/1/0428/9835/8432/files/26450106566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/3907085178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/dudowafipofotiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/29100130970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81274949660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/vce_to_converter_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/77580431128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/logan_s_run_tv_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3814/2627/files/teori_belajar_behavioristik_menurut_para_ahli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8995/9843/files/balarama_online.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 7

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_off000b5b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B15 4864 bytes
SHA-256: 22f6921e280af1cfeb178f8c076784c30ff412a074f0921eefdcf016a573e170
font_01_sfnt_off000b6ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6BA6 11124 bytes
SHA-256: ad7fede2f24a4808e8832539b5399b75afc8ed3f351af779efde606847f48c63

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