Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f256815aa17142b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-11 23:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73810ff5cd4043321043b17bfbea7299 SHA-1: 83df33b05fd800e8ba326e5b18c6e616aff4ba48 SHA-256: 5f256815aa17142bdf6afb0f6d2e3d43c1fa62ac2adecbdbf8afc4b25a9bcf65
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service (ttraff.ru) which is flagged as malicious. The document body text, though heavily obfuscated, contains the same redirector URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to drive traffic to malicious infrastructure.

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=il+mulino+di+amleto+libro+pdf In PDF document text
    • http://files.cyberzone.ca/uploads/1/3/1/4/131408432/lanazimosune-danejoxi-vunumilujugaxaf-fagop.pdfIn PDF document text
    • http://regon.timbertowncoffee.com/uploads/1/3/1/6/131637814/6c046836da2e2.pdfIn PDF document text
    • http://files.snowyrangeleather.com/uploads/1/3/1/4/131454316/7476e457367.pdfIn PDF document text
    • http://files.simplyelicia.com/uploads/1/3/1/8/131858916/56387.pdfIn PDF document text
    • http://rasufo.dayafoundation.org/uploads/1/3/0/7/130776485/maxitemagesufe_tuwapunikofemet_vetujapega.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/1/0433/7877/0076/files/76884772022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8702/6581/files/72288464012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/36643877262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/pdf_not_printing_no_pages_selected.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/59968237915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2975/8103/files/fixevugupodiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/witurarabaxikoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5852/7394/files/rosipedilamumebemekonane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/41500177160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/factory_reset_nintendo_switch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8870/7733/files/50763048867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/12178754428.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_off0000733b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733B 5088 bytes
SHA-256: e94f8f20469b689d46c1bd80c935a6b3e205c75d14d9f13bcfe2dced486c9fdb
font_01_sfnt_off0000845f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845F 11160 bytes
SHA-256: 258fc8b828f267e6a67e903b83f3bcc193d179c89ac9f3617226a1c6ce7403da

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