Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fae942384b50fcd…

MALICIOUS

PDF

39.8 KB Created: 2020-08-26 01:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc10d38844402f4ae20c24ead8051b5e SHA-1: d68882ce9f7b51c0207019576ef51822089e834b SHA-256: 4fae942384b50fcdf3d5ab9f4e3001608a89c7eebbf4c6a530db4707e0465b53
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=folded+star+instructions'. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the title 'Folded star instructions' and references wkhtmltopdf, suggesting it's a generated document designed to host these links.

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=folded+star+instructions In PDF document text
    • http://bujatito.saroswave.com/uploads/1/3/0/7/130775413/9295271.pdfIn PDF document text
    • http://files.vailmassagetherapist.com/uploads/1/3/1/4/131437376/7bc860bc6b.pdfIn PDF document text
    • http://files.bldrwindowtint.com/uploads/1/3/1/4/131437859/jemadu-wurajudosifav-bosowux-bizizebesixus.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/1/0432/6955/4344/files/30461471935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/smoke_2_joints_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/19553192942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/caribbean_pirates_piano_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/98305124289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/notibozuxuwoberof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/22249781099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/89008164548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/explain_cache_memory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/lewepagafipusowef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/fundamentals_of_multinational_finance_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/fesatuditemenijafif.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
🗂 Part of campaign: saratogadandia.org 6 samples

Related samples 3

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_off00005fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDB 4888 bytes
SHA-256: b4949e65d2747db61e515e9ce2447be63f4973acd8d198f581bd4ffb492f4503
font_01_sfnt_off00007083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 9936 bytes
SHA-256: 309bbd15e4cd4c2a75a852b990bbb51c10c77827be189582c0932fc8fd24f01c

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