Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf4f9450268d7a2…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 02:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a9c1d8d6db9331190d03985ba69d620 SHA-1: d98072333a66914cbe72ad8e4688f548cbaf1184 SHA-256: ccf4f9450268d7a2f19e5be1a7d47f29f67fc358496015609dbf5f557140b868
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains the string 'tabacaria fernando pessoa pdf' and the malicious URL, suggesting a lure to a potentially harmful site. The presence of a link farm further supports the malicious intent of redirecting users.

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.cc/pify?keyword=tabacaria+fernando+pessoa+pdf
    • http://files.teachingpeaches.com/uploads/1/3/1/4/131438379/18a2d40d5824.pdf
    • http://wifoki.chcslonline.org/uploads/1/3/2/8/132815028/nalegi_gavovov_jipipeladokuw_rojuba.pdf
    • http://files.jitsbottles.com/uploads/1/3/0/7/130739401/7767804.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/gesutesafo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/53339763770.pdf
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/10911025312.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/rufixofinuwugejawuleluja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/40601009965.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/xovagiruz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/xitimabujirisiladipige.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/64341369967.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.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_off00007321.bin
ea6c59939f0a79d5763596afcc33d11e2de2a87496145232dcfcd030fcaef5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7321 5208 bytes
font_01_sfnt_off000084dc.bin
69b82d672a36314f0bff57cc5dfe5095f28de17ecee50ad746f64fd167d42d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 10140 bytes

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