Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3ee75f1abc1b8b…

MALICIOUS

PDF

38.9 KB Created: 2020-08-19 02:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7979b4952ba0cba0f19674ed0270fdb SHA-1: 1dc44cb6ef9c3087dcaf20e3e88383c6af8e7602 SHA-256: cf3ee75f1abc1b8b3b9bdc7f9d407431dc59afe31d807f248b350b100e197690
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for malicious redirector links, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Lands end school uniforms website' and includes the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely to obscure the malicious destination. The primary malicious IOC is the redirector URL which likely leads to a phishing or malware delivery site.

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.cc/pify?keyword=lands+end+school+uniforms+website In PDF document text
    • http://kiteko.bluemerlephoto.com/uploads/1/3/2/6/132680937/6fd33d34cfb.pdfIn PDF document text
    • http://files.6districtconsulting.com/uploads/1/3/1/8/131856079/xapifirewujo.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/1/0432/4396/2532/files/buick_regal_2018_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/savelupitobazox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6430/3516/files/widubunugoxejawigew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/nodoguripilujagizope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/fezapelegadabafixonaras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/retoxejudozexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/95351747831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/wagejesiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/bsmrstu_question_bank_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9063/2092/files/chucky_2019_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/96250317008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6390/1334/files/bmw_x3_manual.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 1

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_off000059e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0 5432 bytes
SHA-256: a89b3ded459c830cbb61834836d16c476faceb77f6530ad67fa07c1a6bd777ce
font_01_sfnt_off00006c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3B 10248 bytes
SHA-256: 317dea95e7fc863606fd52df83c06216bae8953e12251206164808aa7bd2de47

Open this report in the interactive analyzer, or submit your own file for analysis.