Malicious PDF — malware analysis report

Static analysis result for SHA-256 d567fc27c7297016…

MALICIOUS

PDF

62.8 KB Created: 2020-07-30 16:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b724ade3c271b6ed6835f89b7f00c3c6 SHA-1: d07740fbcff1877842fbf47dd8b351621db14397 SHA-256: d567fc27c7297016a4e0aa17db15e44e00019a1983e08240dd148fa6fa67ab12
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with at least one pointing to a known malicious redirector. The 'ML_NYX_PDF_MALICIOUS' heuristic further supports the malicious nature of the document. The document body appears to be obfuscated or corrupted, but the presence of 'Alif laila story pdf' suggests a lure. The primary attack vector involves directing users to external, potentially harmful websites.

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.com/pify?keyword=alif+laila+story+pdf
    • http://files.thefastshopp.com/uploads/1/3/0/7/130776573/mumubevipo-neriragowal-pogozagoz-vitufola.pdf
    • http://files.culpepermcjrotc.com/uploads/1/3/2/6/132695194/4a11087853bf76.pdf
    • http://files.berrysgardenservices.co.uk/uploads/1/3/1/6/131606673/3248336.pdf
    • http://files.jenniferbiedermannjewelry.com/uploads/1/3/1/4/131407692/5811316.pdf
    • http://files.doublebeehoney.com/uploads/1/3/0/9/130968985/3246649.pdf
    • http://files.doublebeehoney.com/upload
    • https://cdn.shopify.com/s/files/1/0428/8308/8547/files/zizorowotix.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/jumifekolezufokivoradagov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/96426797825.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/lorinanojomed.pdf
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/movefipininuxixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8741/2900/files/ruzivevebit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/riwubajov.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/728467674.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/nilufata.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_off0000908b.bin
250847bba7463f27514f0b7281a35db84e0fb1136e9e80c8b505b6650fed7a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x908B 4692 bytes
font_01_sfnt_off0000a08c.bin
14137013ac49e75698814549b91b30ec03a54d1125c0e8cf85f09804b8f86db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA08C 10952 bytes
font_02_sfnt_off0000c57d.bin
470d43448f1ddf76bc3178a85f9bf494d460afcc5e9a3790780f5f029733f1ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC57D 16868 bytes
font_03_sfnt_off0000dd94.bin
7014f327165f1110479df782d94dead2040dffd4ab1d1a61830612f257d7e134		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD94 4224 bytes

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