Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab214f29b6e8ca5e…

MALICIOUS

PDF

54.9 KB Created: 2020-09-09 21:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 215cd64e9fb195ce7a42a87c52caf892 SHA-1: dd692f345340575db4008bc8fb8c883142c03f2a SHA-256: ab214f29b6e8ca5e5b80a3feb5e619207ecf94ca4d98ed9c269eb946e8fd0cb8
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'. Additionally, the ML classifier strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of its specific content.

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/wix?keyword=space+maintainer+cekat+adalah+pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/27458460719.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4737/files/west_side_story_full_hd_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/36049644817.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/buvivebupisixedenibu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5086/6590/files/vuzedipubepanikemomuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/bapogel.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9071/files/tasozubigapovagepojomavor.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/sql_database_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/zuzopesorivonunoxuvatoxaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/acoustic_absorbers_and_diffusers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/zugokevixarexorunamazi.pdf
    • http://nuramalji.blogspot.com/2008/12/space-maintainer.htmlBAB
    • 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_off00008d63.bin
732b2e462b3ed3429a6f6c43bb996e4a76a0e863a6a8c569780943b2d37e1e8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D63 5060 bytes
font_01_sfnt_off00009e58.bin
34ee84272744696e24e0c24f0ee63936117aa6d52dd85447143190e2f69ce8ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E58 9980 bytes
font_02_sfnt_off0000c073.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC073 4324 bytes