Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d46dd8c2c4c73f…

MALICIOUS

PDF

39.0 KB Created: 2020-08-23 04:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68269eda51255f6879c8f76598c1fe58 SHA-1: 38a38ad65c845753894fad7e0862ee75003070ea SHA-256: c5d46dd8c2c4c73f6426b1814732185c303bf37abae77c50c48f020135e3e5d8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of external links to other PDF files, characteristic of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=indesign+label+templates+avery+5160', is a known malicious redirector. The document body contains garbled text but includes the same URL, suggesting it is the primary lure. No scripts were extracted, and the family is undetermined.

Heuristics 3

  • 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.
  • 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=indesign+label+templates+avery+5160
    • http://files.koabullies.com/uploads/1/3/0/7/130739510/27b1a0c4.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/xelifodugeloxamemobis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/60255977670.pdf
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/the_appointment_in_samarra.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/install_gdb_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/bulletin_de_salaire_vierge_assistant_maternelle.pdf
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/ruwilajusibovizem.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/bal_ganesh_cartoon_3gp_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/pin_for_wiimote.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_off00005839.bin
a436fc38ef76b3c907527cf5496068eecbd0e0861b37c03907a562ddebeccbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 5988 bytes
font_01_sfnt_off00006c91.bin
9f9bb410677deb4de5997f3dd2d036cb046957bf8026e4830d0f2acbfa5c50b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C91 10300 bytes

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