Malicious PDF — malware analysis report

Static analysis result for SHA-256 9757bfe2080067a4…

MALICIOUS

PDF

38.6 KB Created: 2020-08-25 09:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82d863304cb7545a3e103ea0beb649e9 SHA-1: fb4cf22d8a74fe4dcd5f0a5b6e522c830982112d SHA-256: 9757bfe2080067a41748b1e208d65665b7120acff2b45edd49a2f83f9de9735d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that spoofs a job portal. This link is embedded within the document body, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL reconstructs to 'https://ttraff.cc/pify?keyword=deutsche+bahn+karriereportal+anmelden', which is a clear indicator of a phishing or redirection attempt.

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=deutsche+bahn+karriereportal+anmelden
    • http://files.cypressparkflairs.com/uploads/1/3/0/8/130874296/vorowab-vagegikazedi-kazejiwasurev-nujitekabum.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/obs_twitch_chat.pdf
    • https://cdn.shopify.com/s/files/1/0445/1460/7263/files/iphone_5s_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/shoulder_arthroscopy_rehab_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/tibavu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/rudonawenoxunesakuluzex.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/68010700716.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/alice_cooper_poison_tab.pdf
    • https://cdn.shopify.com/s/files/1/0450/9820/5349/files/application_of_computer_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/52584625196.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_off00004878.bin
63e4ab1eea55ddf1313d9402e11655f1afaf93139731cba1b61a43b2b9ff5201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4878 5400 bytes
font_01_sfnt_off00005a95.bin
e700c30dd7f612646dcfc9c43dfb0a6334e821804db975aa87402c8055e3b3eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A95 10748 bytes
font_02_sfnt_off00007e17.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E17 4324 bytes

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