Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0fc0c313f69bbc…

MALICIOUS

PDF

40.5 KB Created: 2020-08-05 09:34:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a448fa474ff0b9a889ad5f075f634b5b SHA-1: 806901b69bbc56938ed0e819535d4be21823e127 SHA-256: 1c0fc0c313f69bbc8d6f604bd8813d9cfeacee332220a986b1a34808eea7002c
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'globalization' and the URLs themselves, suggesting a lure to trick users into clicking through to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=positive+effects+of+globalization+in+the+philippines+pdf
    • http://files.snow-channel.com/uploads/1/3/0/8/130813317/ramapaden.pdf
    • http://files.vendettamotorsports.com/uploads/1/3/0/8/130874134/fb3d3.pdf
    • http://files.hstriclub.org/uploads/1/3/1/4/131406365/foxabef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/53330901414.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/repimegoba.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/fajatedekopafofeva.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/guvoregemujuzumujomebag.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/bikagav.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/26129868910.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/pufuwokuxowabediti.pdf
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/zewekel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2714/files/1645777799.pdf
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/masedinif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/rufumerexon.pdf
    • https://cdn.shopify.com/s/files/1/0439/2694/5947/files/little_alchemy_cheats_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/falimuwolu.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_off00005f17.bin
c83d09a974761883fce6f86ecc19c3cc82120b07751eb4bce84f9659fc35710d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 5572 bytes
font_01_sfnt_off0000721d.bin
04d271df57187b8b818f08cc6ab4c8ccb458e6ff6605dec6dbf3fb4da20c1b41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721D 9980 bytes

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