Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c179777c7ac3370…

MALICIOUS

PDF

31.5 KB Created: 2020-08-24 02:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f70b57d0b5d161487ccb684d9874b40 SHA-1: 36e9f888db047ff1d31027d22cebc09f929e00a4 SHA-256: 3c179777c7ac3370c13485f34f453c9f52f652d0ad5daefddd079f8999972934
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a document about ulcer treatment. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve the redirector's ranking. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.com/pify?keyword=ulcer+treatment+in+tamil+pdf In PDF document text
    • http://duvinex.skidmorecounseling.com/uploads/1/3/2/6/132682883/ronep-wukovo-rovonetosusi.pdfIn PDF document text
    • http://files.kristinbruni.com/uploads/1/3/1/6/131606395/wevawujok-gapavefevumolo-noditimu-siwaseviwi.pdfIn PDF document text
    • http://kozolilen.imanusman.com/uploads/1/3/1/8/131856476/mugipozurekunug_nowov_xupovewog.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/1/0436/7548/4313/files/zowopoziloligavexud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/bottom_navigation_bar_android_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/podasazifurux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0255/9655/files/tilumovamizuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8734/7360/files/localizer_performance_with_vertical_guidance_lpv_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/fegobanezanif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kuby_immunology_6th_edition.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 6

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_off00004162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4162 5116 bytes
SHA-256: 58a8818a3b68f51a1305ce13a6e0bdf33d008bdba70ac92635a4a880fdf3b8de
font_01_sfnt_off000052a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A7 9100 bytes
SHA-256: af1badd3d5420970c3f1c54e9dca70f688ecaf54805c5a5704131a66c5924bd4

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