Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aca191e62eed865…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 03:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51df0240e751c6476ed8a957487ca5da SHA-1: 2d50b3b121f5f1ec10a60451b439b9b34cf8cc29 SHA-256: 1aca191e62eed865b1ab6bcd8ec1ef152837325a73345d29d877ef727baa425c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=capitalization+and+punctuation+paragraph+worksheets+pdf', suggesting a lure to external malicious content. The presence of a link farm heuristic further indicates a malicious intent to redirect users to potentially harmful 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=capitalization+and+punctuation+paragraph+worksheets+pdf
    • http://zejusakud.moyanicheallaigh.com/uploads/1/3/2/7/132740405/kumog-fegevowujo-jozoduwaxovaf-retiv.pdf
    • http://files.esmacats.com/uploads/1/3/1/6/131637316/7769727.pdf
    • http://files.pfalzerwald.com/uploads/1/3/2/6/132681517/jezizukiraxape.pdf
    • http://files.sablecatalchemy.com/uploads/1/3/2/6/132682820/zejixaga_nerakerelutipe_polifep.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/mofisavitezebusoda.pdf
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/bk_precision_880.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/podajotiramaxowa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/49809249685.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0822/files/56509684417.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/mafulukiwudiwafuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/file_tidak_bisa_dibuka_di_outlook.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3381/files/reflexion_sobre_la_armadura_de_dios.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/bujogejev.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/rigesit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4516/5975/files/91617898823.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000639a.bin
8efa03f07ac3c95ef74be87e4a8e181c1c3aec320df84eea5d80e525cd7048c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 5528 bytes
font_01_sfnt_off0000767c.bin
e1412bbf4f74401776cbbf6d29a5bc625866b94cd55b677959df85037de8d200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767C 10440 bytes

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