Malicious PDF — malware analysis report

Static analysis result for SHA-256 8274814136c0f4d4…

MALICIOUS

PDF

45.5 KB Created: 2020-07-29 16:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95753225d9e482976ab76407ce62f675 SHA-1: 9cf821ae5d2ce3d71882bc04fedecf37a335b24d SHA-256: 8274814136c0f4d447e5dfb0b7f3810c139745d5cb8d110b7183bd104230ed18
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links pointing to redirector infrastructure, specifically identified as a link farm for SEO manipulation. The primary redirector URL is 'https://ttraff.com/pify?keyword=refrigeration+and+air+conditioning+technology+john+tomczyk+pdf', which is designed to lure users into downloading what appears to be a legitimate PDF but leads to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=refrigeration+and+air+conditioning+technology+john+tomczyk+pdf In PDF document text
    • http://files.katherinehelena.com/uploads/1/3/0/7/130776407/ee5020.pdfIn PDF document text
    • http://files.capitalcitybev.com/uploads/1/3/1/6/131637482/6400377.pdfIn PDF document text
    • http://files.stclaircountydems.com/uploads/1/3/1/4/131406234/f2ffae3e2963.pdfIn PDF document text
    • http://files.arcancientaromatherapy.com/uploads/1/3/1/3/131398139/jidas.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/1/0432/8525/0216/files/degok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/38205400980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9957/6733/files/29658025196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/ramisevefora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/79410480926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/52682453266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/87908874402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/66365739685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5331/files/gelekemufiraviverex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/81445694375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/lorugozunoxarovofubo.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_off000073c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 5480 bytes
SHA-256: d89cad72892133d3b324b92d0d63fe495063ce2735d2c92990516cfaacb56ebf
font_01_sfnt_off00008653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8653 9924 bytes
SHA-256: 489dfcc9ab4c1b0a931c275ea15a141e1d29d089ed459088cfe419978dd1cdfe

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