Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd8008141bafd8c…

MALICIOUS

PDF

70.5 KB Created: 2020-08-14 05:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee851d2bca9d96ca1a1585f5f6e79b81 SHA-1: 458f77dd7a78015474a8d69faf1c6c3bd78bb891 SHA-256: 0cd8008141bafd8ca16b03524d18f51089dd18176ed331de4f113dca72c32f88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the suspicious redirector. This suggests the file is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=singular+and+plural+nouns+worksheet+answers
    • http://files.ovationentertainmentgroup.com/uploads/1/3/1/4/131408117/d61f0f40c.pdf
    • http://files.parkcitybrewery.shop/uploads/1/3/0/8/130814245/2fe8725a.pdf
    • http://files.thomaslabandz.com/uploads/1/3/2/6/132695714/7c31ef8e7445c24.pdf
    • http://files.slolivingdesigns.com/uploads/1/3/0/9/130969148/wozimetu-berilapaluxano.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/43906131756.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1015/files/mevukevamot.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/nafisixurojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/bonnie_and_clyde_biography.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/ladubufugadelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/perugisozosogigopam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/worn_out_faces.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/xerudegopazuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5864/2595/files/foo_fighter_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0453/4665/2315/files/como_fazer_uma_assinatura_digital.pdf
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/nepas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/64169822630.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/19339807448.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd78.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD78 2828 bytes
font_01_sfnt_off0000d772.bin
0532a0b6f1a0aeaca0c192cc16bdff4b5f3c020579f8c46c079322417218f654		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD772 5480 bytes
font_02_sfnt_off0000ea1d.bin
c37cb833704057f913f4e1e3807080054a5da3d30865bbbc4780a01ad324d550		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 9932 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.