Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead4a560c01b6fc2…

MALICIOUS

PDF

109.9 KB Created: 2020-08-01 13:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38c5f0c3932b32b7bd4ca73cc9baf0a6 SHA-1: cebf70f7a8ce6a576457d4e70ba191c8ec5906a1 SHA-256: ead4a560c01b6fc2a423ebd1e5dab1bad8e8b9ceffc14cd8f1ae07a2eadb93d3
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a link, likely leading to further malicious content or phishing.

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=1001+albums+you+must+hear
    • http://files.kerrythibodaux.com/uploads/1/3/1/4/131482819/2689328.pdf
    • http://files.kirkplayers.com/uploads/1/3/1/0/131070767/7a53682eb315.pdf
    • http://files.foxxpoolsbycburger.com/uploads/1/3/0/7/130775634/5902692.pdf
    • http://files.ambleon.net/uploads/1/3/1/0/131070125/zulalusimutolosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/55846382164.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/pibanakimu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/36835080869.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/82295249257.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/ing_direct_canad.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/gukametafunaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/84141057533.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/talorinuxosuniweb.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8263/files/54704716470.pdf
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/46070422853.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/makezun.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/tomixoxeg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001590f.bin
f0be167b465d1fd20a21c5bb644356a220f98a60f79ec257ace4e7f3ba0128b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1590F 4996 bytes
font_01_sfnt_off00016a0c.bin
f9dd195e980cd2f8c8526da97d65c92f802c0dde61b9572e82d28a622947bfde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A0C 16144 bytes
font_02_sfnt_off00019bc0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19BC0 4324 bytes

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