Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2342c019723371…

MALICIOUS

PDF

40.7 KB Created: 2020-08-16 17:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adeee1af391347d29724322c79ae1043 SHA-1: 7089c51ffe33e30fe2965ac785773cc87cae958e SHA-256: 5a2342c019723371476dc3db76f90bd4a56dbc65d395fd3a4a5db52a93e775ad
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a 'half life problems worksheet answer key'. One of these links, https://ttraff.cc/pify?keyword=half+life+problems+worksheet+answer+key, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to a malicious site. The presence of a 'download button' heuristic further supports the deceptive nature of the document.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=half+life+problems+worksheet+answer+key
    • http://zowuwa.douglaslakeshoreassociation.org/uploads/1/3/0/7/130776485/6048995.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/nofadaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9751/files/lemevesabolunas.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/ambiente_organizacional.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/wozuwituralakok.pdf
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/9317651874.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/ultimate_spiderman_game_cube.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/88845369426.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/68424048582.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/timilutumitaluk.pdf
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/apple_music_family_sharing_iphone_and_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/pharmacy_residency_letter_of_intent.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_off00005f3b.bin
8b1d2de60017cbe1fea3cdbe9fa93472be9d58a2b0c1e3730908a054d37e73a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3B 5500 bytes
font_01_sfnt_off000071d6.bin
48df51d8ed3f14938dba716a0f944120188a3a83689b0c3baac1b4775b20f869		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 10540 bytes

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