Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e9ec8875373192…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 19:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc59eb0136ef69a1a62959fb019f1ed7 SHA-1: 9a0d494803efe9075cfe9899c76961c88b9da143 SHA-256: 62e9ec8875373192f6177be034cb50a3ffd823e712f13ce81c463db4ee8ec51b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector URL disguised as a free download for 'Animal Farm' summary. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm the presence of malicious redirector links and a link farm designed to appear as legitimate 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.com/pify?keyword=animal+farm+summary+pdf+download In PDF document text
    • http://files.ifapa-africa.com/uploads/1/3/1/0/131070291/156496.pdfIn PDF document text
    • http://files.oakdalemma.com/uploads/1/3/1/3/131381802/3084622.pdfIn PDF document text
    • http://nijinedo.whbaptist.org/uploads/1/3/0/7/130739564/nejiluvef_noruzifo_bedoriwi_fetakuduzenob.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/1/0430/4388/1114/files/koruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5504/6037/files/lewepanusanujigevilifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/29859416238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/motitobuvisuperajosake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/xazefavexirufibusesevama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9616/2972/files/certified_ethical_hacker_cert_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/10862425269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/teora_del_materialismo_histrico_bujarin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/7935072995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/oxford_dictionary_english_to_tamil_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/13549696753.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 4

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_off000062d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 5372 bytes
SHA-256: 0ea47e3ec27d0ab9f632b6960d8d02515ae44557dac816751a6c51fc02b34445
font_01_sfnt_off00007513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 10112 bytes
SHA-256: 569cb92e6cfdc6926b26f7aeb64ad234bfca6935fd16190708df8aa4a4309f1d

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