Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7d3b612327fb87…

MALICIOUS

PDF

114.2 KB Created: 2020-08-21 15:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fe15b1d250a29369b2d13bbbe9690ac SHA-1: 2a35edc167c543121c1d63d772d2c49441406db5 SHA-256: cb7d3b612327fb87745370dbf32489bde161db2f1c5e0589c78761ea6e3c6db4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of specific execution chains.

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=history+of+armed+conflict+pdf
    • http://files.arvadatherapysolutions.com/uploads/1/3/0/7/130739892/546138.pdf
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/jilusekevasutezitudosubaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2418/files/dapuzuruxosivosobuzab.pdf
    • https://cdn.shopify.com/s/files/1/0451/8104/2839/files/colombo_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/70531234627.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/bumekuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0932/files/elementary_numerical_analysis_atkinson_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/lipizune.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/45932706393.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/nimokeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/4573/8903/files/momum.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_off00014e84.bin
0f1cab8d2d9edcbbf0d4c8573183005a17fed3e629e93f224dca7f4ea5b58ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E84 8596 bytes
font_01_sfnt_off00016acd.bin
66156bc62321a8390f738c9c69271d8cadc662a9aefa2160f69f5973256512ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16ACD 5152 bytes
font_02_sfnt_off00017c36.bin
3b127509577cc39dc010ca14a361846a9d14b65f3193e028dbf5bcb8bae235db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C36 15792 bytes
font_03_sfnt_off0001acf0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1ACF0 4324 bytes

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