Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c53417baf2516e6…

MALICIOUS

PDF

108.9 KB Created: 2020-07-25 16:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6636182710102b72bcb2b5cc7d6ed7f9 SHA-1: d5e3dc05ff916d6ed7c1f9a40c8195797f794080 SHA-256: 5c53417baf2516e654924b01873fc3f4232d07165d7006cba6fcdc61c67658af
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external sites, many of which are identified as redirectors to malicious infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'guide'. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-linked redirectors points towards a phishing or malware distribution campaign.

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=ck2+monarch%2527+s+journey+guide+chapter+3 In PDF document text
    • http://files.mjohnson7.com/uploads/1/3/0/7/130739060/lerisutelizatetel.pdfIn PDF document text
    • http://files.jamestowncooperage.com/uploads/1/3/1/3/131398094/gamiwi_pavusolapuv_sutukoxutiwobo_xezasik.pdfIn PDF document text
    • http://files.benrosenblummusic.com/uploads/1/3/0/7/130775918/7680122.pdfIn PDF document text
    • http://files.rsq-d.com/uploads/1/3/2/8/132815181/nevuvemitof.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/1/0428/5808/6559/files/faliwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/sefurabolepirob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/22476220345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3477/7499/files/ratogozenujopefeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/20690943691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0539/3570/files/74824900400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/5964007484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/tesatefabomitadixubazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/19061657982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/tetow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/63005583614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/69684285885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1974/files/rivanesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/4046190956.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 3

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_off00016e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E23 5932 bytes
SHA-256: db44adede695d826c16ecb7ee3515bbad8a7a1b10257d41553c190b567b151b4
font_01_sfnt_off0001823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1823C 10404 bytes
SHA-256: 8ab617ea23473bd067444f3cc93c9d659a622777563801442718904af7ce5343

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