Malicious PDF — malware analysis report

Static analysis result for SHA-256 627c7b0a2294f728…

MALICIOUS

PDF

50.6 KB Created: 2020-08-25 07:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4339c4e4bfe923b1e7eb747a3b80d90e SHA-1: 0b3019a508e98a47a02c10ce4fb958d0c371989d SHA-256: 627c7b0a2294f728a961bcdddf89c0a48199f6d9e1ebc4b89e91238370c7e241
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL is 'https://ttraff.ru/pify?keyword=invention+and+innovation+pdf', which is designed to lead users to potentially malicious content. The document body, though heavily obfuscated, contains references to the same redirector and other URLs hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted from this sample.

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=invention+and+innovation+pdf In PDF document text
    • http://files.rehbocksolutions.com/uploads/1/3/1/4/131408204/bomoxinuni_masamuvubexeg_dexoxomunivezo_megox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/wovinirepudekebuduxevapog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/93637619799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4675/5734/files/20426495396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/gazejowevuxupal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/bogapajazimato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3719/9257/files/estructura_del_sistema_nervioso_central.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/pidixutoniwimosoxobozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/rational_functions_examples_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/99431584280.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D55 4512 bytes
SHA-256: aeb3ca02e7d199a7323388fc1ea4712b02c490fd23dc8b84ed02f551b9ab217a
font_01_sfnt_off00008cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBF 10272 bytes
SHA-256: 04c4368c7dcda0b47a1f446335a6c9bc26b54a5c718dbccc2593d8e76a240f15
font_02_sfnt_off0000afd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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