Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe6d07c3b2a1397…

MALICIOUS

PDF

37.4 KB Created: 2020-08-12 16:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 375c0213a420df357978e640bd0c2372 SHA-1: 8202d84a7bedb025e335c4a69bd5f915a945a898 SHA-256: 7fe6d07c3b2a139797fb796bda0d2ae18e44572100090f3044c34edbbc94735c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to external PDF files hosted on Shopify and other domains, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.cc/wb?keyword=pandemic%20jogo%20manual', is identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same malicious redirector URL and other PDF links, reinforcing the lure.

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/wb?keyword=pandemic%20jogo%20manual In PDF document text
    • http://files.animachristiretreats.org/uploads/1/3/2/7/132740296/951202.pdfIn PDF document text
    • http://files.localumass.com/uploads/1/3/1/4/131454501/866f14b76dbf5.pdfIn PDF document text
    • http://files.mikebernalmedia.com/uploads/1/3/1/4/131408256/faa484a.pdfIn PDF document text
    • http://files.mattiacupelli.com/uploads/1/3/2/6/132695730/bojuwopolumid.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/1/0433/7251/1386/files/rivabilimaturom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3577/files/13679968182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/sivipewiwofijeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0821/6487/files/bovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/carcinoma_epidermoide_oral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/dofeputuwezuwudufurovisof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/pogaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/sudco_mikuni_tuning_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/kirchhoff_s_current_law_derivation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3129/6160/files/bearing_selection_guide.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_off00005418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5418 5060 bytes
SHA-256: ef94c58505674c505e757ab529c91b3f0a1c4773d7d3f445090dd995142721f1
font_01_sfnt_off0000653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 10684 bytes
SHA-256: d1a5a261461df570d65b6480a8143ad4deb37b22adb73414f28b6c80456b5cdf

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