Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed17f5d50298c1b9…

MALICIOUS

PDF

41.6 KB Created: 2020-08-13 23:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a24ffb1ba7c9ef3dc28896970f00dcd7 SHA-1: c26dd4d20204cadad3f9f16009c6536b6bad369f SHA-256: ed17f5d50298c1b97e54737b1928ee618006579dc7f9b2f25455729e612aa77b
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=dragon+ball+legends+android+19', points to a known malicious redirector. The presence of numerous links, many hosted on Shopify domains but pointing to potentially malicious content, strongly suggests an attempt to lure users to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, but the heuristic firings clearly indicate a malicious redirection pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=dragon+ball+legends+android+19
    • http://files.painfog.com/uploads/1/3/0/8/130813906/tunoj.pdf
    • http://files.sideporchhandmadesoap.com/uploads/1/3/1/3/131397960/754b7e2.pdf
    • http://files.mccaulleysminidoxies.com/uploads/1/3/0/7/130775786/2090974.pdf
    • http://files.katyscarlett.com/uploads/1/3/1/4/131453725/2866480.pdf
    • http://dunekilom.triplecrownlacrosse.com/uploads/1/3/0/9/130969061/gabapib-turalura-dojazafu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0990/files/kemimikazoweneru.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/21429598632.pdf
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/32702257271.pdf
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/membrane_bioreactor_processes_principles_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/35595514050.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/mojubevaxelojabolonenudod.pdf
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/brush_pen_lettering_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/jefutiviwuxamelilej.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/91117727484.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/aprendizajes_clave_curso_en_linea.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/pdf_abnormalitas_spermatozoa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/towisofon.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_off000061f5.bin
8d0853dbbc0595312e348b48dea254c2df4c9fedd58142a2b526bb2d9ed6fe68
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F5 5340 bytes
font_01_sfnt_off00007423.bin
55a2e68431a6b065e8d704f1b59df9aa809349ccb4ccdd88bbe94da665397765
pdf-font-stream PDF embedded font (sfnt) at offset 0x7423 10944 bytes