Malicious PDF — malware analysis report

Static analysis result for SHA-256 953e7bb3f68c5dfb…

MALICIOUS

PDF

45.9 KB Created: 2020-08-08 22:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58a48f3cb66cf673e1143cb0bb9de538 SHA-1: f84ea94106685646d44e891d10eca99e8b26257e SHA-256: 953e7bb3f68c5dfb3b98755491dfbafd89497b788f9900659c10bd6328e2f518
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=livro+dos+espiritos+allan+kardec+pdf`. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites, potentially 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=livro+dos+espiritos+allan+kardec+pdf In PDF document text
    • http://files.buildaseries.net/uploads/1/3/0/8/130874254/1842345.pdfIn PDF document text
    • http://jetuke.fairfaxpinesenglishlabradors.com/uploads/1/3/2/3/132302782/3e1b7b.pdfIn PDF document text
    • http://files.hypnoticsolutions.org.uk/uploads/1/3/2/6/132682790/f8abd3ffd0d5.pdfIn PDF document text
    • http://files.psionbeta.com/uploads/1/3/1/1/131164185/kavevasuxuk-tewavoguvo-vodalufum.pdfIn PDF document text
    • http://files.boninglassdesigns.com/uploads/1/3/1/6/131608037/jogidiwapitijoruzefo.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/1/0428/7974/6201/files/wodume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/1_bullets_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/turexojukoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8274/files/we_re_soaring_flying_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/potojip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2406/4410/files/mizawafek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/xajijovesafirewoxerez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7906/6009/files/17464237678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/pibejinezep.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_off00006fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 5216 bytes
SHA-256: 97cac7b3eeae95aaaac9acfd050023c4822f505d0f075575d9d598a4894c7cfe
font_01_sfnt_off00008182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8182 13592 bytes
SHA-256: f6e7689476064b9c6c009c7f3ee51ca4f708e986588bb89db54f7ac6799f003f

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