Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49e2145089a0194…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 19:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8dafce766e08ab76c1ec08f6d78c768 SHA-1: 59b880629519ed9f45cf52206ac5e95ef8e68455 SHA-256: f49e2145089a01948cfc1e29226c3963d0768206713e4bb66b5b5c8f4bb330ab
234 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, with one prominent URL leading to a known malicious redirector. The document's content and heuristics indicate a social engineering lure, specifically an 'installation lure' designed to trick users into downloading a browser update or extension. The primary malicious URL identified is https://ttraff.ru/pify?keyword=free+latest+uc+browser++for+pc, which is likely part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=free+latest+uc+browser++for+pc In PDF document text
    • http://files.piercingcrossfit.com/uploads/1/3/1/6/131606366/pedazilotufutekejul.pdfIn PDF document text
    • http://files.bagsbytheshore.com/uploads/1/3/1/4/131406403/5768397.pdfIn PDF document text
    • http://files.greatnewsuk.co.uk/uploads/1/3/1/4/131452821/pakibusepad.pdfIn PDF document text
    • http://files.ownerbuildercourses.com/uploads/1/3/1/3/131379732/d06de.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/1/0430/4781/3269/files/9263534812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/cool_answering_machine_messages_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4191/files/wafikotafaxexagilup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/zekimiwumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/22508662184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/43102316221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/kejuforifuwiwokeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/weights_exercises.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 6

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_off00005e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E98 5196 bytes
SHA-256: ef970583653ae6e81967bd0c0bacb7076852f6aaeec85bd3d14327c6a6d5f71c
font_01_sfnt_off00007061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7061 9956 bytes
SHA-256: e93698a51e1e1f1ca4c08f48b239ad9bdf842ed148f69ebf229754a6b1296ccc

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