Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6877ba9050032a…

MALICIOUS

PDF

42.3 KB Created: 2020-08-07 09:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1b863702c21b6a8250016f95a51b439 SHA-1: f7edcaf910cf684ce47e0d156e22800800d7e4c1 SHA-256: 3d6877ba9050032abb323a1a8bc63da43c039609c7348f5345c73d8b3b940fee
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=libro+balun+canan+pdf+gratis'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external PDF links, many hosted on Shopify, suggesting an attempt to game search engine results or distribute malicious content. The presence of a 'download button' lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=libro+balun+canan+pdf+gratis In PDF document text
    • http://files.trianglemarketplace.org/uploads/1/3/0/7/130740205/bowibibubufi.pdfIn PDF document text
    • http://files.zpchurch.org/uploads/1/3/1/4/131407469/kudefinugipozo-sebono-nurexipevo-vopudim.pdfIn PDF document text
    • http://files.americanlegionpost141.org/uploads/1/3/2/7/132712000/cb06322c6e.pdfIn PDF document text
    • http://files.losangelesmakeupartist.org/uploads/1/3/0/7/130776590/5695188.pdfIn PDF document text
    • http://files.vividskateshop.com/uploads/1/3/0/7/130776852/4613940.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/1/0433/0881/0398/files/jepuvoxufokiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/80293744204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/37333701820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9080/4885/files/pagokepoxenad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/guwodisowino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/44750857108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/89138674346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8985/2568/files/comment_briser_les_liens_ancestraux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/rowesimuparadidebizajegi.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_off0000676b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676B 5404 bytes
SHA-256: 1a1138babc3c01700017a827032135c7bd7980757bed7974fd80087b597f9936
font_01_sfnt_off000079d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D9 10112 bytes
SHA-256: 9ff6fe4080d7ee25bed87220b58d46c7f2e4625237beda81f4fcb084f8da16d9

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