Malicious PDF — malware analysis report

Static analysis result for SHA-256 0895723b7bc12a85…

MALICIOUS

PDF

51.7 KB Created: 2020-08-24 05:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3167266e9453f00997483325e8474f77 SHA-1: 1fc2fe81ff13c078e3fb312d730c861f16a76163 SHA-256: 0895723b7bc12a85e09c93d770c90a1d67687f5e881080cad0d541adc07ce0c2
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same redirector URL. The presence of numerous links and the redirector strongly suggests an attempt to lure users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=quimica+inorganica+libros+pdf+gratis In PDF document text
    • http://files.lesmagnoliashotel.com/uploads/1/3/2/6/132696111/599c8c32a3d51.pdfIn PDF document text
    • http://files.avisplacechildcare.com/uploads/1/3/1/3/131383398/1f62b1911d.pdfIn PDF document text
    • http://files.de.com.sg/uploads/1/3/1/8/131856034/4950691.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/1/0435/9729/9869/files/android_antivirus_apk_full_version_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/77292626599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/gipanuzapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0885/1101/files/cast_away_full_movie_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9529/4101/files/xokulomopafozumiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2920/6939/files/rajarhat_gopalpur_municipality_mutation_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/61201337064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/56988012517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/activity_on_node_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/jevufidox.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_off000087c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C6 5676 bytes
SHA-256: ed1a7b9e43e8f36e9f74e62bf34cf350549ac79afbe7cb670299dbfa62544d99
font_01_sfnt_off00009aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AEA 11520 bytes
SHA-256: 255065efec2123f6a6d2b0c23d1d533ad409e94612a62b95b852658e458057af

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