Malicious PDF — malware analysis report

Static analysis result for SHA-256 855ffad526e280ca…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 14:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ddb77b2105acb06a1ded737c46d6a6b SHA-1: dcbab073d3eda324bc383a33be9a743d8a0ca0f0 SHA-256: 855ffad526e280ca1db6fea9aaccf5c1178675f1e1e9622d234e127454307359
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary URL `https://ttraff.com/pify?keyword=botulisme+adalah+pdf` identified as a malicious redirector. This suggests the document is designed to lead users to malicious content through a link farm strategy. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=botulisme+adalah+pdf
    • http://files.palmettoswingevents.com/uploads/1/3/0/8/130874587/5869242.pdf
    • http://files.watsonhill.com/uploads/1/3/1/3/131381553/7721762.pdf
    • http://files.redandgreenschool.org/uploads/1/3/1/3/131382406/tasixar_xuzisus_xoveju.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/human_anatomy_mckinley_4th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/fanotepiluwete.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/13050421801.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/census_2020_chapter_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/49389377658.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/vudewiregipiborewajezow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/xetuvokufabemiruxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/wegogufupakuroxixe.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_off00005f28.bin
5560a8029660bc64f18194b03a70c67a0b25d9e86c06315a2e79daa282609969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F28 5236 bytes
font_01_sfnt_off000070d2.bin
a1f28fd993e9df6260d9c4cf8ffcc8422f6c667c1f5d98826beac7e8749a1046		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 10992 bytes

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