Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f42ef7c7cf684a…

MALICIOUS

PDF

65.1 KB Created: 2020-08-04 15:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 748ee42ce4ec03a3006052f8e90a1e2f SHA-1: 7c58c3fe8c67bb14ce02c7333fd8988755eb3dc9 SHA-256: 25f42ef7c7cf684a2d19905dd390bf00c5081c44d89caddd930c67ab7cd109fa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=pisagua+alcides+arguedas+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0436/0100/2664/files/20793758838.pdf'. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the intent to redirect the user. 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.ru/pify?keyword=pisagua+alcides+arguedas+pdf In PDF document text
    • http://files.robertsiteach.org/uploads/1/3/1/4/131437702/485eaad6737458.pdfIn PDF document text
    • http://files.nuamescounseling.com/uploads/1/3/0/8/130874026/menevufamekatapuw.pdfIn PDF document text
    • http://files.2020hawaiishirts.com/uploads/1/3/1/8/131857756/4390770.pdfIn PDF document text
    • http://files.innovationlabsinc.com/uploads/1/3/1/4/131438501/2ebf62a59272441.pdfIn PDF document text
    • http://files.fibrehaus.com/uploads/1/3/1/4/131453432/ramikokobime-kozeturoj-zogapekakepuvip-fekaduji.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/1/0436/0100/2664/files/20793758838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/xinizunirufenaboki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/36578026551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/64392193033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/crimes_of_the_heart_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/74953380282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/voxebatuleteni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/zodadijebepamafowogazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/les_anticoagulants_oraux_directs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8379/1526/files/54432447058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/58152445759.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_off0000be7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE7A 5324 bytes
SHA-256: b33b423c2fdf4307a3dab367296db6a756e56244f2f9b1b31d7f9b9500dd06e2
font_01_sfnt_off0000d0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A6 11320 bytes
SHA-256: 3d2585f4731ed5306e5df439f6fafb9865804a6553054ac8ee1b506569f039bf