Malicious PDF — malware analysis report

Static analysis result for SHA-256 5183c682dc2a0444…

MALICIOUS

PDF

54.3 KB Created: 2020-08-28 04:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9bfb63a9e9ed57016365dda907697c SHA-1: 36d8da0ac105c98a387d394f2f05f40c018ed537 SHA-256: 5183c682dc2a0444d5473c1a630a6eeeaa25924663d59277e5f93279f479e30a
194 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior through a critical heuristic firing for a redirector link, pointing to 'ttraff.me'. Additionally, it contains a large number of external PDF links hosted on Shopify, indicative of a link farm. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves leveraging these links, likely for SEO manipulation or to distribute 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.me/pify?keyword=staying+strong+365+days+a+year+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.suigenerisstationers.com/uploads/1/3/1/6/131637679/4363144.pdfIn PDF document text
    • http://zerupiw.ambiancegardendesign.com/uploads/1/3/1/3/131380729/kazopuje.pdfIn PDF document text
    • http://files.amberemson.com/uploads/1/3/1/4/131406321/xinumuvad.pdfIn PDF document text
    • http://niwowig.hubbellbros.com/uploads/1/3/2/3/132303382/69ddc51a94863cb.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/1/0432/0477/1999/files/bixamujibarowurixaguraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/57090498128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1858/3973/files/43892945623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/baccalaurat_en_gnie_informatique_universit_laval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/screening_colonoscopy_coding_guidelines_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/7257073294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/lukinanufugijegojab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/pezezilomujidixiras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/zinebujunevapasuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4048/0155/files/data_has_already_been_sent_to_output_mpdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7138/files/kogid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/suxemizomuxulivigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/73138055257.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9F 6068 bytes
SHA-256: 1667ea0008fb6f07e693932b3307d93c2044e18795cdce2f36e9766807d7ea20
font_01_sfnt_off00008303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 2528 bytes
SHA-256: fa00ca2efb3740422adce526fcbaa5037a21e39b9482affa9e7d95016e3f9ad0
font_02_sfnt_off00008e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E33 10632 bytes
SHA-256: 7fc865721768134d91d114b8264218dc7c5b3567adea1ba7a2c77fc886717774
font_03_sfnt_off0000b27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB27D 16544 bytes
SHA-256: 49230a07578f2a0b108554ff1d47b1cb24b8f8081254bad551c0ce72ea05e0a5