Malicious PDF — malware analysis report

Static analysis result for SHA-256 459f3a75ea9959ba…

MALICIOUS

PDF

38.6 KB Created: 2020-07-28 11:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d914b6f804fa27f26764b275261aa5e SHA-1: de00cbca85420c1dfd0bac045ba28c233ba1f976 SHA-256: 459f3a75ea9959ba2faea3cd788c1305653bb6758f5e1e4ae36cb5fcad3b75c9
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain text related to 'Besame mucho guitar sheet music free', suggesting a lure to disguise the malicious intent. The presence of a link farm further supports a campaign aimed at distributing malicious content or phishing.

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=besame+mucho+guitar+sheet+music+free
    • http://files.yanichoralsurgery.com/uploads/1/3/1/4/131453121/paxapare.pdf
    • http://files.mikearcherphotography.com/uploads/1/3/2/6/132696285/7605652.pdf
    • http://files.artsquad.studio/uploads/1/3/0/8/130814774/fopogebapimi.pdf
    • http://files.meganwestman.com/uploads/1/3/0/7/130739970/5004706.pdf
    • http://files.mikearcherphotography.com/uploads/1/3/2/6/132696285
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/2032941407.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/45984909199.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/8046325780.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/69009172696.pdf
    • https://cdn.shopify.com/s/files/1/0431/4398/7357/files/32352302098.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/lixovarowuvaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/fugaruzogina.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/24226078300.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/rujugitamotesex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/mifekolekaxatepugif.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_off00005913.bin
2c8f3a4737a51a275dd2dd51011abb234cbcebccb3899028b575d0351f2205a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5913 5088 bytes
font_01_sfnt_off00006a68.bin
8fab69e74fcdc171c5013447675e7ef5a17d8e59ec9061de2e8099d4b1d204b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 10172 bytes

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