Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed253fa13beed5f…

MALICIOUS

PDF

44.2 KB Created: 2020-08-09 09:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb7d34b41f301035ce52cdda56837186 SHA-1: 0971f25b78010c9f40e57adde352d64cc63dd504 SHA-256: 1ed253fa13beed5f497bc6fb7094db8be571202bd74b294f41a50810bbfb08d5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=chamfering+process+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF title, suggesting a lure to a malicious site. No scripts were extracted, and the family is undetermined.

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.cc/pify?keyword=chamfering+process+pdf
    • http://files.maltaglasscreations.com/uploads/1/3/1/6/131637316/8677662.pdf
    • http://files.iraqi-poet.net/uploads/1/3/0/7/130739810/milaku-wirerewizup-wuzik.pdf
    • http://dojalefa.darrellmatsumoto.com/uploads/1/3/0/7/130775320/wasoxurepujilojarod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/zefesogunuwaxobuzow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/61204049287.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/human_development_in_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/ffa_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/81505418896.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/kunotosakelurefewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/gupuvajenapama.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/zalejixidalozuwavifukox.pdf
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/haggadah_text_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/pewuxim.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/kwsp_table.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006038.bin
b1a2dc9ef54ccf741f609c9094d28a2969d7c7e14453bb7e7cc6bced6e5d5ddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 5268 bytes
font_01_sfnt_off000071f4.bin
c6847a71c7208ff0f407f18d38ae56746de2e96a2d281c91a4d2dbbf4abb92bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 10564 bytes
font_02_sfnt_off00009609.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9609 4324 bytes

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