Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a05c4d00ffcee65…

MALICIOUS

PDF

68.9 KB Created: 2020-08-26 06:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95829f7e1e91d398b8b12a8de1994d4a SHA-1: b5954aa40e503eaad2bd478fb5a4d76396fc619d SHA-256: 5a05c4d00ffcee6530a7b58e640dcb663c16fb80395630fd3846594fe82754c2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=moteur+%25C3%25A0+aimant+permanent', which is identified as a malicious redirector. This suggests the PDF's primary purpose is to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.com/pify?keyword=moteur+%25C3%25A0+aimant+permanent In PDF document text
    • http://files.megpeterson.com/uploads/1/3/0/7/130740530/lufudamolo.pdfIn PDF document text
    • http://files.deanacio.us/uploads/1/3/1/4/131453715/gaxujepabomir_tamikukare_jepebusopo.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/1/0432/2403/9592/files/lefam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9545/7946/files/dukajixux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7470/6853/files/autodesk_inventor_tutorials_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/xazosewinilokowokibigexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/29604047279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/34534584448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7911/3635/files/diccionario_de_administracion_publica_colombiana.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D8 4992 bytes
SHA-256: fca08b0904771f0c44a36f67d71e4af403d62ad24c05a6107966307a932a9b49
font_01_sfnt_off0000c936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC936 12236 bytes
SHA-256: db8cceeadf8e3b156826c0065d8887b60cf0622faf585cd3639332ee0f37cd6b
font_02_sfnt_off0000efe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 16152 bytes
SHA-256: 379b758e65e9b37656e8de387f14e1ed5651a10e4933af748d58739bc3359644