Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb620cb89cfcede…

MALICIOUS

PDF

51.2 KB Created: 2020-08-26 08:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e9f07e53148604210a884096f0f0649 SHA-1: fcf4f89770a1509b6094ba612da0eb7af3143373 SHA-256: 1fb620cb89cfcede602f2ecbb3bf6a995d5e7aa6babceddc4943ad451626b9c2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=r6+vs+r6s'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0434/3853/8904/files/59410953859.pdf' being a prominent example. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the redirection attempt.

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.me/pify?keyword=r6+vs+r6s
    • http://files.olibarnewrochelle.com/uploads/1/3/2/6/132695568/f99f0cd9d31.pdf
    • http://kavoz.laurahawbaker.com/uploads/1/3/1/8/131857120/14c5f0e7bb55.pdf
    • http://vovis.ktr-tactical.com/uploads/1/3/1/6/131637030/tuzanubulenumut.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/59410953859.pdf
    • https://cdn.shopify.com/s/files/1/0433/4577/2698/files/angry_birds_epic_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/mowuzisebebonexajogepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/webpage_to_converter_chrome_extension.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/pevezarimire.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/24164165880.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4658/files/88135769516.pdf
    • https://cdn.shopify.com/s/files/1/0433/0858/1019/files/ansell_casey_life_skills.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/gramin_awas_yojana_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/tovusan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/22324793020.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_off000070ee.bin
5dc725fd58eef790d154f7e53c7aea41d054d7cf30df46dbc0ec30c7df4a31e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EE 3984 bytes
font_01_sfnt_off00007e5d.bin
7e248dac81150694474ce8ac31ccb06e2c85f026ecc231e9d6f51038ca3796a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5D 16304 bytes
font_02_sfnt_off0000b084.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB084 4324 bytes

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