Malicious PDF — malware analysis report

Static analysis result for SHA-256 edbbfc30ca654bd2…

MALICIOUS

PDF

48.4 KB Created: 2020-07-29 23:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 800cd747b2ed05afd4341806adc340ed SHA-1: 009dc8fd1b51e59c61ef19843a2e54b528591732 SHA-256: edbbfc30ca654bd26b972cea2eb43d705c56609e486572331495b202aa42d255
234 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a large number of external PDF links, suggesting a link farm for SEO manipulation or malware distribution. The document body text explicitly mentions 'Lightest pdf reader for windows 10', aligning with the 'SE_BROWSER_INSTALL_LURE' heuristic. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=lightest+pdf+reader+for+windows+10', which likely serves as a redirector to a malicious payload or phishing site.

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=lightest+pdf+reader+for+windows+10 In PDF document text
    • http://files.caring-for-cats.org/uploads/1/3/1/0/131069890/roxededobudetaxut.pdfIn PDF document text
    • http://files.nupelicanparty.org/uploads/1/3/2/7/132710732/348e4618.pdfIn PDF document text
    • http://files.westbloomfielddeca.com/uploads/1/3/0/7/130776682/8499458.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/1/0428/3206/8775/files/94307436951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/58768074205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/juxawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/92545968134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/ketusofaxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22584543347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87678197609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/nezegenugudalakofisajukug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/rekunorovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/22441575590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/24703018223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/34450177987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/giruwav.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_off0000777c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777C 5284 bytes
SHA-256: c0f6968e5f2ed529f6ffa2c77eac10c1ea49ec0edacdd1a48e9dd41b74078946
font_01_sfnt_off00008988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8988 13496 bytes
SHA-256: 1470864ade217276a7a32f3bfbc2f34ecd3797304be9f2630186e5f7110e1a14