Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e51d24d4fca2a87…

MALICIOUS

PDF

45.0 KB Created: 2020-08-07 05:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6231164447069a621dc6c2f15610ce17 SHA-1: 052ae7c7ce3974ca23fe5332267893ea2f7b2e2c SHA-256: 3e51d24d4fca2a87308a7edc9f73368f3d0a6f6ada0b9e41480f0a21812670de
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One prominent URL, https://ttraff.ru/pify?keyword=the+coming+revolution+capitalism+in+the+21st+century+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to academic-sounding titles and the tool used for its creation, likely to lend an air of legitimacy to the lure.

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.ru/pify?keyword=the+coming+revolution+capitalism+in+the+21st+century+pdf
    • http://files.pendletonnazarene.com/uploads/1/3/1/4/131452804/7d1fa24d0673c.pdf
    • http://files.hippovalley.org/uploads/1/3/0/9/130969310/givemes_rofezovizajo_vomuwakuj_kibonegewo.pdf
    • http://files.dawnandduskba.com/uploads/1/3/0/9/130969965/9667223.pdf
    • http://files.mindmapfraktl.com/uploads/1/3/1/4/131407968/53b3d1cbc3.pdf
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/546600061.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/fifakizodafaxure.pdf
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/xegifenorowiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/xolasag.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/52657056159.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/67689958011.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/40237334600.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/50234804086.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2133/5702/files/35701026350.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/71787570591.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/85393990196.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_off00006ecb.bin
715f8a6da53ae794b22734690f316a381912482f53dea4fe8729022de2763218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECB 5864 bytes
font_01_sfnt_off000082b1.bin
1fce3a580d6fe3f95e1a76f4145dfe71b4acf31d4cf6500c2d168035bcbe5900		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B1 10004 bytes

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