Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d575c795a3979b…

MALICIOUS

PDF

46.8 KB Created: 2020-07-30 18:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a9440358aad43e3861669ebb7460424 SHA-1: 0fecf4ed436be91828dddff9c0ef7a3b2dccbd69 SHA-256: 95d575c795a3979bf82ebdd555e6514b15933802f1c4612bd6f7be8c1d432d2e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document is designed to lure users to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of a malicious intent, likely for phishing or malware delivery.

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.com/pify?keyword=%25D0%25B8%25D1%2581%25D0%25BA%25D1%2583%25D1%2581%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE+%25D0%25B2%25D0%25BE%25D0%25B9%25D0%25BD%25D1%258B+%25D0%25B8+%25D0%25B8%25D1%2581%25D0%25BA%25D1%2583%25D1%2581%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE+%25D1%2583%25D0%25BF%25D1%2580%25D0%25B0%25D0%25B2%25D0%25BB%25D0%25B5%25D0%25BD%25D0%25B8%25D1%258F+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+pdf
    • http://files.cemmethod.net/uploads/1/3/2/6/132696249/niwipun.pdf
    • http://files.mopswestchester.com/uploads/1/3/1/3/131379650/7722789.pdf
    • http://files.pemberton-browne.com/uploads/1/3/1/4/131408899/fizot.pdf
    • http://files.eaglecreekwinery.com/uploads/1/3/0/7/130738893/1608120.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/63902244688.pdf
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/sosujukojazelipon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/75764782475.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/25020502928.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/zizane.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/5447379239.pdf
    • https://cdn.shopify.com/s/files/1/0440/1859/8053/files/tosilirunovigowilogorunuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/mezidix.pdf
    • https://cdn.shopify.com/s/files/1/0440/8400/2981/files/57238984531.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/30181202650.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/zidarudofebon.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/madudomugubotasekamuvuzav.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/
    • https://cdn.shopify.com/s/files/1/0428

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006983.bin
0fed4b0ac2db5b496a5179f85a08f74b3c133e0d14695f4fe445c641b77c9b8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6983 5652 bytes
font_01_sfnt_off00007c28.bin
fa1a86e5f7f6ed66f9126f5c665c4907a151c764e511d438284d8fe752944415		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C28 14368 bytes

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