Malicious PDF — malware analysis report

Static analysis result for SHA-256 88497c6c85171c3e…

MALICIOUS

PDF

49.0 KB Created: 2020-08-04 00:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6baee3375164170f834a330e88ff771 SHA-1: 0fa72eda418db6cf34ded20f00acfbb8bfe8a2d2 SHA-256: 88497c6c85171c3e0b04b79e20e8b389c4884b95d4e58c54d8603719c506e6f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.ru/pify?keyword=effects+of+plastic+pollution+on+human+health+pdf. This technique is often used for phishing or distributing further malware. The ML classifier also strongly indicated maliciousness.

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=effects+of+plastic+pollution+on+human+health+pdf In PDF document text
    • http://files.thswebpages.org/uploads/1/3/0/7/130776826/1212569.pdfIn PDF document text
    • http://files.ogilvies.scot/uploads/1/3/0/7/130775309/3152752.pdfIn PDF document text
    • http://files.trivalleysir34.org/uploads/1/3/2/7/132740413/sipoleluzo-lasogusapigud-wesikir-wosowamesadisit.pdfIn PDF document text
    • http://files.flaniganssportsworld.com/uploads/1/3/2/6/132696233/mekak_kujanox.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/1/0428/0070/9791/files/74996678627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/18120823728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/19006745782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/99085494665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/71277503753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/rasowuzemuwalexumawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/lapigelasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/74945567600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/warcraft_3_frozen_throne_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/47508747905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6482/5758/files/64480001343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/denadidowejutiberaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/tbc_leatherworking_guide.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 7

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_off0000811d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811D 5256 bytes
SHA-256: a6d754ee666431dd87bae8316da4b53682e44f06c60498fb9e96baaa98e5c920
font_01_sfnt_off000092e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E4 10364 bytes
SHA-256: eebe3ae850173eb3fbb03659242246afc3bf78153515ef05b6ca5f4785384f5c

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