Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d47780aad53bc5…

MALICIOUS

PDF

34.4 KB Created: 2020-08-07 16:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a9278cfc520a8f5d22165b9e89a18c6 SHA-1: 76c2e6da0f117956622070d6c142a3e5adf9ac57 SHA-256: 12d47780aad53bc587f4b22f459a806176b1d6d925752dcddab2cf5d58cd13a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirectors and SEO-optimized PDF files, indicating a link farm or phishing campaign. The primary redirector URL, 'https://ttraff.cc/wb?keyword=acoustasonic%2040%20manual', suggests a lure related to a product manual, likely to trick users into downloading further malicious content or visiting a phishing page. The ML classifier strongly flagged this PDF as malicious.

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=acoustasonic%2040%20manual In PDF document text
    • http://files.movingstarzpub.com/uploads/1/3/1/4/131406440/simazukakisox_birelop_jivupo.pdfIn PDF document text
    • http://files.sansurising.com/uploads/1/3/2/8/132814219/pajadumi.pdfIn PDF document text
    • http://kaginax.listensoundart.co.uk/uploads/1/3/1/1/131164250/kenaga-bimovura-pibajozapa.pdfIn PDF document text
    • http://fidula.birthingbaby.com/uploads/1/3/0/7/130776483/roragu.pdfIn PDF document text
    • http://files.homelessradiomagic.com/uploads/1/3/1/4/131483343/wopodujanajod.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/1/0432/2826/6654/files/xujamalafawaxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/19256729790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/gesiduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/tofewikowofov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2804/4193/files/php_soap_client.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4408/files/gorerufupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5209/files/55893782011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/sanusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5746/9845/files/64692099860.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_off00004aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA6 5068 bytes
SHA-256: 5870321c2e230302d40dae5c4afdfde5459191ffb362b0cda08067cfa6ce4deb
font_01_sfnt_off00005bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD8 9732 bytes
SHA-256: 168cf87581be385d1c5b56823e5581d10485845d69e449456396f1128e86b471

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