Malicious PDF — malware analysis report

Static analysis result for SHA-256 c776520fbe98e55b…

MALICIOUS

PDF

43.2 KB Created: 2020-08-02 15:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59542dfd28601d9334fa2534d5f1e139 SHA-1: b40245f614bafbe9d69b851f0b5c7faaf29e49b2 SHA-256: c776520fbe98e55b8b33a65359315fea3ce67641d79cdd6679f485619ce2fc55
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=cabin+in+the+woods+streaming`. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded URLs, many hosted on `cdn.shopify.com`, which is flagged as a PDF link farm. The document body, though heavily obfuscated, contains the same malicious redirector URL, reinforcing its role in the attack. No scripts were extracted from this sample.

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=cabin+in+the+woods+streaming In PDF document text
    • http://vofiw.thegoldenguesthouse.com/uploads/1/3/2/3/132303410/vamuwopu-gupavelufudejem-tamivu-ruditis.pdfIn PDF document text
    • http://files.foothillsmeats.com/uploads/1/3/1/1/131163667/3967367.pdfIn PDF document text
    • http://files.hareloomupholstery.com/uploads/1/3/1/4/131454221/a13b2bf742f5c.pdfIn PDF document text
    • http://files.hanaleispirits.com/uploads/1/3/1/4/131454523/zojuvepu-litatasare-ruzuwotibemabuf.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/1/0433/0687/7080/files/wopeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/nine_inch_nails_only_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/moodle_fcm_unl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/9556163612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4583/7208/files/voteligon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/2528958582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/79779953754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/79380240411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/82763937037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/jemosowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/najubesizexifibisoxadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/99181721673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/gateway_buckshot_mudder.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_off00006b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B69 5344 bytes
SHA-256: 6afc09d7b5c6bb7a6e190525f208477b5c79dbde5ebdd17fc91001985cc05477
font_01_sfnt_off00007d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D77 10060 bytes
SHA-256: 4494ebf2ae2f8b4cd8bd44f19e54f418fc8787ad349e5091229434259b14a554

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