Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac638933ba945c0…

MALICIOUS

PDF

50.9 KB Created: 2020-08-18 12:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa3c3648af672c5f343db2ca1885c966 SHA-1: a369ea217b0421c5592c846aff0d4e37ca027757 SHA-256: fac638933ba945c0591454de4d5862c8a4b0a49e4a2b144dc0ab2a35fd792393
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=verizon+fios+internet+outage+report'. This URL is embedded within the document body, disguised as a report about Verizon Fios internet outages. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most significant IOC, as it likely leads to further malicious content or phishing pages.

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=verizon+fios+internet+outage+report
    • http://files.juliettehuber.com/uploads/1/3/2/8/132814250/05b07e3d6ef.pdf
    • http://files.thomaschristopherhaag.com/uploads/1/3/1/4/131437845/d240ba3a.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2597/files/betogebizavanajavuxamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/semop.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/aprendizajes_clave_tercer_grado_primaria.pdf
    • https://cdn.shopify.com/s/files/1/0435/9516/9950/files/aristoteles_filosofia.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3223/files/jawaxejusifed.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/3394983757.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/nubibijofum.pdf
    • https://cdn.shopify.com/s/files/1/0437/6474/4343/files/bunnings_melamine_sheets_sizes.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/38349414176.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/33437030150.pdf
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/cadbury_products_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/55655187284.pdf
    • https://cdn.shopify.com/s/files/1/0429/5101/6601/files/27125370943.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5208/files/madip.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/wivaborosexupodiw.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006568.bin
044071653b0d20ecaa9b87a62b81b8bac5ece6360592817a2cc8c61e86d5022d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 5052 bytes
font_01_sfnt_off000076ad.bin
93844a937d600159bcc4a18a6d0f6275448e694f4f8cc39253f4198ac691a5b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AD 2572 bytes
font_02_sfnt_off0000823d.bin
7370a0925e992714da4ae124f9ee5199dcb291ba243b3fa45c6e91167eb6ee03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823D 10808 bytes
font_03_sfnt_off0000a773.bin
9dabca42bef2a22c2263bf44398572a978aa9fba020f2c48293d93db2b78962a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA773 16688 bytes

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