Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ba57ed73153627…

MALICIOUS

PDF

36.6 KB Created: 2020-08-24 09:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3650eaa35ebd0381b557cf57cf0bb3c SHA-1: cb47451793ec37516949efe63fd3da13b9e927ed SHA-256: c9ba57ed731536273a3c9c1ee68b5541928d62617033c8d54b1e585386b84e21
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'Christmas lights background psd free' and the malicious URL, suggesting a lure. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm strategy, likely to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=christmas+lights+background+psd+free In PDF document text
    • http://files.cffu.org/uploads/1/3/2/6/132683111/bazakekukaxatiwi.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/1/0431/9005/9176/files/light_pink_platform_heels_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8369/4247/files/46467232361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/95770583850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/malayalam_english_arabic_dictionary_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/2191848868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6653/0719/files/682557440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/diwunimemiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9272/2339/files/shimla_punjabi_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/72474373137.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 8

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_off00005337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5337 5680 bytes
SHA-256: 7b3f4ea64ce67e0b92935bd13a4bad76c30acd244f236258425d0183e73061a3
font_01_sfnt_off00006658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 9280 bytes
SHA-256: 68ab8d9ec49e7d4b550c842d1f805e1b02d13f5d19e8c7fe96e95f48013ca238

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