Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5a47823bfc33a3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 12:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ce58dfb5f559073e6fd93e50ce8b710 SHA-1: 1ee965fc6a651ea11a455dd4e98cc459a1ff42a1 SHA-256: 8f5a47823bfc33a3556720a7862610c0f4afb09d5784b38c55ff4de77bd712d7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are designed to mimic legitimate file hosting services but ultimately redirect to a malicious domain. The document body, though heavily obfuscated, contains text related to a 'chemistry book class 12 pdf' and the malicious URL. This suggests a phishing or redirection attack aiming to trick users into downloading further malware or visiting malicious sites.

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.com/pify?keyword=chemistry+book+class+12+pdf
    • http://files.lyndonleadershipconference.com/uploads/1/3/2/7/132740805/2027330.pdf
    • http://files.myztery.net/uploads/1/3/2/6/132696155/9472412.pdf
    • http://kerez.soccerelectric.com/uploads/1/3/0/8/130814328/12713f1.pdf
    • http://pugite.hillsburghbaptist.com/uploads/1/3/2/6/132695329/finerorakedabek-jeref-vuzevidukezuzes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/pomewa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/ruzadinovisimovoxatemu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/72754350066.pdf
    • https://cdn.shopify.com/s/files/1/0437/0336/9878/files/79473069570.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/wisevuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/45059854170.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/49469619551.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/levisamokidokakotok.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/78962058400.pdf
    • https://cdn.shopify.com/s/files/1/0429/4223/4791/files/83170869803.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_off0000651b.bin
9f4343d64151320a3d023bfa9587a94f6b581bb836473c7b96bb44d9be8d4d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 5792 bytes
font_01_sfnt_off000078aa.bin
50e1eee4bc5e58cf11ce61f1505d5d577e589b52a677cde8abda3208339d1b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AA 9888 bytes
font_02_sfnt_off00009ad0.bin
42923c3470ede73934010439524ecf1bef59234cefecaf2ec823372c12b35008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD0 2784 bytes

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