Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9f833541b6ae15…

MALICIOUS

PDF

41.2 KB Created: 2020-08-06 08:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ed6daa8dfc656f6bc1244367c9f93fa SHA-1: ebd6c6842218afb2767b29ac1b40611fd5fd6c6b SHA-256: 7d9f833541b6ae15b07d8a5f37980df42c67e0c86895dd63fa66cb3f08d90c20
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=dulce+et+decorum+est+analysis+line+by+line+pdf. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site for phishing or further payload delivery. The ML classifier strongly supports the malicious verdict.

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=dulce+et+decorum+est+analysis+line+by+line+pdf In PDF document text
    • http://files.riveterlaw.com/uploads/1/3/1/4/131438718/xadorifij-numofozefiwe-judure.pdfIn PDF document text
    • http://files.silviossauce.com/uploads/1/3/1/4/131438018/gatagupeworekofikife.pdfIn PDF document text
    • http://nogali.capabilitygray.com/uploads/1/3/2/7/132741555/patojezirelulalam.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/1/0429/9672/7957/files/97468159445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/xezalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/bogedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/98544360087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/serepibomanufomami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/3._idiots._2009_subtitle_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5283/3687/files/68262363620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/brochure_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/grade_12_physical_science_module.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 7

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_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 5540 bytes
SHA-256: 0ea86984f3e45736aca85cb518ce55c705d65c778cd97a29cbfd261cd9614667
font_01_sfnt_off000075b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 9932 bytes
SHA-256: c9f3f117090578376b0976087f0574d898764420e14b02916b16789e17f358d5

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