Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db4cc873395250b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 05:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c8dae5de7087e7d6ab75a5fa63a0224 SHA-1: 913659dd6c33f376bba757a66cdd7a2462777414 SHA-256: 5db4cc873395250b69cb761a26ce71314838fd3012f81d5314cbcb110225e99b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the PDF is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=aditya+hrudayam+lyrics+in+tamil+pdf In PDF document text
    • http://files.myptsdveteran.com/uploads/1/3/1/3/131398360/4ece218d.pdfIn PDF document text
    • http://files.kishonnagray.com/uploads/1/3/1/0/131070144/kivotivuwupi-vatuxugo-jozij-vevobolod.pdfIn PDF document text
    • http://files.feeliingthehealing.com/uploads/1/3/0/9/130969764/vafotuxamuximofami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/fundamentals_of_applied_electromagnetics_ulaby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7989/1099/files/gagiroloba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/pamuzenezukegolufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/douglas_adams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/48020383921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/jitadajezikopimugebigar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/56919434271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/sufanugafaluvade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/tamugesotajinovetakunave.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7408 5484 bytes
SHA-256: 305f9343c688b6a47fac9ce215fc0c3f8b6d82ec3862f308aae21ee9f99b5a34
font_01_sfnt_off0000868c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868C 2140 bytes
SHA-256: f46e6372de50a2cbde1f8bdabbbab189751cb3bd88e87a1552b81ba7dbba52c8
font_02_sfnt_off00008fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFF 10856 bytes
SHA-256: 339a6ac8d101d768293793eea9042cc40df6e091c6cf44335914617f86ccdd42

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