Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ddb4d614d396b0…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 21:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9babfa8bd1738793d26780e77e7d6d5d SHA-1: b3ca1bb4dd21848c0072dca2834f047e9c12df76 SHA-256: c0ddb4d614d396b0948f9e41ea93fa5c857e8229b7493c674f3ff7954fdafabb
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a social engineering lure, instructing the user to download a 'Google Chrome installer'. It embeds numerous links, with a critical heuristic identifying a malicious redirector at `https://ttraff.cc/pify?keyword=google+chrome.+exe+free++for+windows+8`. This redirector likely leads to the download of a secondary payload. The presence of a link farm and the browser extension installation lure further support a malicious intent to trick the user into executing untrusted content.

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.cc/pify?keyword=google+chrome.+exe+free++for+windows+8 In PDF document text
    • http://files.abluedotkitchen.com/uploads/1/3/1/3/131379268/5425137.pdfIn PDF document text
    • http://files.bribetter.com/uploads/1/3/0/8/130815137/1381984.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/1/0434/8621/6344/files/20714220113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8427/5100/files/55597449023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/danavudopizikepowoboxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7330/0632/files/etiologi_amenore_sekunder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4641/2188/files/tedufetofuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/16375016070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5813/4182/files/microsoft_word_how_to_guide_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/96309719945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6611/2662/files/gedonudulerukubobilelam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/livaladamekevutona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/importancia_da_analise_swot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/vakigisiverovu.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_off000062da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 5640 bytes
SHA-256: f9b37004aeb3135bc94f7824d3aea093c3b61d42e5bdabf7356b25bf90399ec8
font_01_sfnt_off0000760e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760E 10084 bytes
SHA-256: 26ec99c296f53fda49d3936454c36bcc9123ec211b6b119ec6b42fa50af11b0a