Malicious PDF — malware analysis report

Static analysis result for SHA-256 f343c5b5137d04e1…

MALICIOUS

PDF

68.0 KB Created: 2020-08-13 21:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d042d93e6ed245f2dc843200a0872e51 SHA-1: e48157617593c8fb73ea34a52c8bd34f68bad9bc SHA-256: f343c5b5137d04e1975900ad6c9b19a449f6572865591d2f0ef74710412dad61
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link disguised as a game guide, which redirects to a malicious URL. This is a common phishing lure to trick users into visiting potentially harmful sites. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm used for SEO poisoning or phishing.

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=spider+man+game+ps4+trophy+guide In PDF document text
    • http://files.bemedialiterate.com/uploads/1/3/0/7/130775665/pudisase.pdfIn PDF document text
    • http://jekefan.theartspasf.com/uploads/1/3/1/0/131069934/1804449.pdfIn PDF document text
    • http://files.srsm.org/uploads/1/3/2/6/132696029/5841345.pdfIn PDF document text
    • http://files.tailwagmarketing.com/uploads/1/3/1/3/131398279/45cfe2926.pdfIn PDF document text
    • http://files.eastsidechurchofchrist.us/uploads/1/3/0/8/130874205/zijazem-xovupowajurulo-wetupejikuvogo.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/1/0431/8819/1396/files/wojelesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/expected_utility_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/91828402394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/64037817613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/suteluluwokobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0227/7542/files/43099157713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/43344519514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/46660199204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/biology_class_10th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/baixar_do_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/98672736122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/jofirolesikusupobareze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/polaris_trailblazer_250.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_off0000c8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D8 5636 bytes
SHA-256: c90946a8ced50d10065dc5361ea2fd052570bcb75ade98bb226c1cfd95ca1035
font_01_sfnt_off0000dbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDC 11340 bytes
SHA-256: a7a113238c5a2df95fb15940272153b491126eb01e14756f3d9f95cf714bf764

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