Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c14e6b04716381…

MALICIOUS

PDF

42.1 KB Created: 2020-08-05 12:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76c78f83146d892a50f5ec16eae52b2c SHA-1: 3156b5845b925556a8d7022bd8cf0d4ced606b61 SHA-256: 83c14e6b047163813549e373ca96ca3425ba50d6dc19076150c42e1d7d5be197
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body, though obfuscated, contains the URL that is also present in the heuristic findings, suggesting a lure to a phishing or malware distribution site. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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=bootstrapping+your+business+greg+gianforte+pdf In PDF document text
    • http://files.hr-conference.org/uploads/1/3/1/3/131380889/dudaze_fodifef_xakomivuz.pdfIn PDF document text
    • http://files.solconenergy.com/uploads/1/3/0/7/130775084/2936037.pdfIn PDF document text
    • http://files.bjswoodcreations.com/uploads/1/3/0/8/130814586/tufoluta.pdfIn PDF document text
    • http://files.theweeklybeaver.com/uploads/1/3/1/4/131482821/vijebubenef-joripag-kemimevagid.pdfIn PDF document text
    • http://files.verarey.com/uploads/1/3/1/4/131406582/091a98a45e.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/1/0429/6369/7817/files/cfa_level_1_study_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7179/0494/files/becker_cpa_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/biblioteca_de_alejandria_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/rugetuwife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/rimunelix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/54174161360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/79831426783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8078/1719/files/pdf_file_splitter_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/guriwoxajojibifaxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0752/5542/files/masopimovimitateturonid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/duxupaxoloxurep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/63550632559.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_off0000653e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653E 5468 bytes
SHA-256: 092257ae29c1a47e190aa4d9079e370fc61f5cda00fc5f9e254ade93a2805706
font_01_sfnt_off000077e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 10320 bytes
SHA-256: d9609b0fb3b7039a54f1835c97f20a236522d29927b0751c4c3fc9af57a6d8a0

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