Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde345bc37b89faf…

MALICIOUS

PDF

45.8 KB Created: 2020-08-03 04:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e927744ef55ca95c153ba0f297010cd SHA-1: 1f0387fd20651b31c6dc4f5b1ad22f7614de435d SHA-256: dde345bc37b89faf3003374ba0a501f06bb100b149bdcaf64ef1d0c97852d099
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the text "Decocraft 2 1. 7 10" alongside the malicious URL, suggesting a lure to download or access something related to this term. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=decocraft+2+1.+7+10 In PDF document text
    • http://files.posterworksgallery.com/uploads/1/3/2/7/132740623/606b5d2a5.pdfIn PDF document text
    • http://mubemuwud.realgoodcomedy.com/uploads/1/3/1/3/131383613/pavodized_zupusodenix.pdfIn PDF document text
    • http://files.allstarwrestlingaustralia.com.au/uploads/1/3/1/3/131398193/tavomi-wujejirale.pdfIn PDF document text
    • http://files.medicollector.com/uploads/1/3/0/7/130738792/3103807.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/1/0438/4748/3552/files/18568619504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/lapajuvajiwumadex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/49060026649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0024/2077/files/31252504870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/1989_bmw_325i_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/80755281354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/zanikepofodif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75278808376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/sememebovuwowowejariwan.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000575e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575E 5100 bytes
SHA-256: 69f27a4d102e9aaa24a4eef554ed481c665bca55c2f3a07e004e67876371b688
font_01_sfnt_off000068dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DC 14016 bytes
SHA-256: 10b942ddc0e5e087fbc641f02962b1b6705d389073df4818efb5b969aba46e8e
font_02_sfnt_off00009598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 16064 bytes
SHA-256: 8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802

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