Malicious PDF — malware analysis report

Static analysis result for SHA-256 85f475d1c7d31274…

MALICIOUS

PDF

47.2 KB Created: 2020-08-07 00:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29c94868a28ce932817062bcc1b521e9 SHA-1: 8b2db101e190a7848b1e56a00a3d55e248646e97 SHA-256: 85f475d1c7d3127451034d767a44ea05528f00aa734caaf97a45ed390b9560b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a phishing or scam lure related to PDF manipulation. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector link is a high-confidence indicator of malicious intent.

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.com/pify?keyword=fusionner+plusieurs+pdf+en+1+seul In PDF document text
    • http://files.havenartistry.com/uploads/1/3/1/4/131483235/10c7f.pdfIn PDF document text
    • http://files.nicoleadriennecreative.com/uploads/1/3/1/4/131409309/lubituwe-fevuz-pijufakiv.pdfIn PDF document text
    • http://files.cincomediagroup.com/uploads/1/3/1/3/131380754/9b3a8c.pdfIn PDF document text
    • http://files.applebrookinn.com/uploads/1/3/0/7/130775200/fusinofowip.pdfIn PDF document text
    • http://loguvo.thecommonwealproject.com/uploads/1/3/1/4/131437363/867e12b0168.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/1/0433/0687/7080/files/12339474235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/66467397967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9507/files/favuzudoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/9441273692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/81547164527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/pile_boring_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/kitevadigiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/13144743966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/bronconeumonia_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4569/4112/files/advanced_cardiovascular_life_support.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/speed_seduction_3._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/rojenepelom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/wevujiwopive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/case_files_biochemistry_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/90416881798.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_off00007846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7846 4832 bytes
SHA-256: babc72f34dc61b666b8de6b8840755c5a1e9e1443c7834e974874e7c5447a95c
font_01_sfnt_off000088cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CB 11668 bytes
SHA-256: 70115395c9c54df43f29abc6392b4769582d61b4f165db9cd1c75e47d72a4947