Malicious PDF — malware analysis report

Static analysis result for SHA-256 682c8fcd840f5312…

MALICIOUS

PDF

33.6 KB Created: 2020-08-04 11:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3477bd275a254c26d59fd897fffd3ba0 SHA-1: fea0c7106cc3dfe340a03fca10d7501d0c142325 SHA-256: 682c8fcd840f5312ae04fddd3a230df8cc2f4974fe43cccd13c68e93aa755301
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link farm designed to appear as a legitimate download for an "agenda mercantil 2020", but it redirects to a malicious URL (https://ttraff.cc/pify?keyword=agenda+mercantil+2020+pdf+descargar). This tactic is commonly used for phishing or to distribute further malware. The ML classifier strongly supports the malicious verdict, and the presence of numerous external PDF links suggests an attempt to manipulate search engine results for malicious purposes.

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=agenda+mercantil+2020+pdf+descargar In PDF document text
    • http://bonelumo.tiasshabbychicboutique.com/uploads/1/3/2/8/132815002/vazaxujimirisigi.pdfIn PDF document text
    • http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.pdfIn PDF document text
    • http://pemizenit.thecornerstohr.com/uploads/1/3/1/3/131379730/378fd17a810d1.pdfIn PDF document text
    • http://files.sitesofpassage.org/uploads/1/3/2/7/132712096/gekavikilan.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/1/0428/9835/8432/files/vinujavezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/mokobuvifametegoxuwexole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/nizugawojuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/s10_v8_conversion_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/17868714314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/asepsia_y_antisepsia_articulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/online_picture_converter_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/rurujagidureku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/94682938392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/61295326237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/bodeladowujujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewobaropelizovijekozuji.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44EC 5740 bytes
SHA-256: 085f461e56c0cafedd557f6a120929c5cc96edf04b7304ef068609a787cab6bf
font_01_sfnt_off00005862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5862 9724 bytes
SHA-256: e8103542c834130de5a7fd79903ab57fbc9f834c598dca89caf4ef19c58b729a