Malicious PDF — malware analysis report

Static analysis result for SHA-256 c537791c340f49b2…

MALICIOUS

PDF

44.9 KB Created: 2020-08-20 03:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f438d13d0d1091498a7988b153c8e9e SHA-1: 6cef3589ddfdda3d898884f0a0511f595efc042c SHA-256: c537791c340f49b2db920cecda38985041654a002b1b6fcbc4bd4ae05eca6c91
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=information+risk+management+policy+template'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of a link farm further indicates malicious intent to distribute malicious content.

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=information+risk+management+policy+template
    • http://files.ctcommercialpainters.com/uploads/1/3/0/7/130776826/jujuxunolod_fizono_doruxivima_nafotewe.pdf
    • http://xizutedif.cbsamet.com/uploads/1/3/1/0/131070487/vokorasaba_jovaserulazib.pdf
    • http://files.mydebtreliefteam.com/uploads/1/3/1/4/131437873/8638001.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/49768486203.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/zufamisixasovikure.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/tijeve.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/monepolivuwozizipopubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/sample_marketing_plan_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/66996533326.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/solving_absolute_value_inequalities.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_off000071b6.bin
c290d21720b9369e6c03fd53ef2c8ceefaf647733ad43fbf35f2ecb9d1346113		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 5436 bytes
font_01_sfnt_off00008427.bin
833488bcc64fc5ddd2cb397b9699ed031e394f741f486725ef2a50edaaeeda63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8427 10280 bytes

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