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)
MD5: 800cd747b2ed05afd4341806adc340ed SHA-1: 009dc8fd1b51e59c61ef19843a2e54b528591732 SHA-256: edbbfc30ca654bd26b972cea2eb43d705c56609e486572331495b202aa42d255
160 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.

Heuristics 4

  • 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.
  • 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
  • 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
    • http://files.caring-for-cats.org/uploads/1/3/1/0/131069890/roxededobudetaxut.pdf
    • http://files.nupelicanparty.org/uploads/1/3/2/7/132710732/348e4618.pdf
    • http://files.westbloomfielddeca.com/uploads/1/3/0/7/130776682/8499458.pdf
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/94307436951.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/58768074205.pdf
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/juxawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/92545968134.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/ketusofaxif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22584543347.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87678197609.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/nezegenugudalakofisajukug.pdf
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/rekunorovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/22441575590.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/24703018223.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/34450177987.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/giruwav.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000777c.bin
c0f6968e5f2ed529f6ffa2c77eac10c1ea49ec0edacdd1a48e9dd41b74078946
pdf-font-stream PDF embedded font (sfnt) at offset 0x777C 5284 bytes
font_01_sfnt_off00008988.bin
1470864ade217276a7a32f3bfbc2f34ecd3797304be9f2630186e5f7110e1a14
pdf-font-stream PDF embedded font (sfnt) at offset 0x8988 13496 bytes