Malicious PDF — malware analysis report

Static analysis result for SHA-256 c878399be4cd8585…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 12:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69608657f29a46dd09964a61b72b4bcb SHA-1: b829f483d013991ecf5bc90c95c8d41cd0f7e382 SHA-256: c878399be4cd85855de0a8eb3c2c7d60b986f0b33c8d58dbd1799cf92ffab55b
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the document's primary purpose is to trick the user into visiting a malicious site, likely for further exploitation or credential harvesting.

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.com/pify?keyword=stereochemistry+of+allenes+and+biphenyls+pdf
    • http://dorotikiv.cdestem.com/uploads/1/3/1/3/131384169/5985a4f4d956a.pdf
    • http://files.bollywood-dreams.jp/uploads/1/3/1/0/131070866/2255929.pdf
    • http://files.kolaccountants.com/uploads/1/3/1/6/131606321/1ddc630e802e46.pdf
    • http://files.kolaccount
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/lanozagozutimafurotepew.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/3075533858.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/96086775327.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5515/files/vuwububakatik.pdf
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/bgp_cisco_press.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/82906209367.pdf
    • https://cdn.shopify.com/s/files/1/0437/5861/6733/files/98353290242.pdf
    • https://cdn.shopify.com/s/files/1/0432/1869/8400/files/controlled_oral_word_association_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/revirilasan.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_off00006b4f.bin
8368a0e7cc6c850be12f9eba317250fd66cfc12bedb8c31e97f3e36a5a27f930		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 5528 bytes
font_01_sfnt_off00007de5.bin
67982d4aa2d24d31628671ee0b8b25f4957d61a6d48370aefaa0225e547f0bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE5 10412 bytes
font_02_sfnt_off0000a18f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA18F 4324 bytes

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