Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf0142eb924c44e…

MALICIOUS

PDF

50.4 KB Created: 2020-04-04 10:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4e707ac55421722746d4ec42ac81a0f9 SHA-1: d86038a2f393103c708f3acb8547634df5691778 SHA-256: cbf0142eb924c44e8029664fd6935df008793a1e8f2fd0e19b14d630713970c7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The document body itself is heavily obfuscated and contains some of the URLs, indicating a potential lure or redirection mechanism. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://laurajoart.com/uploads/1/3/1/4/131437584/131437584.html#hyperdimension+neptunia+re+birth1+li
    • http://stevenpardoe.com/uploads/1/3/0/9/130969406/sexenubuzudokozesuv.pdf
    • http://etsimo.com/uploads/1/3/0/5/130590537/pawofijoza.pdf
    • http://allbailbonds.org/uploads/1/3/0/3/130379222/0d3b561bd20.pdf
    • http://independentwatertesting.com/uploads/1/3/0/4/130476144/sugevozikibineja.pdf
    • http://markcgarrett.org/uploads/1/3/0/6/130603946/14502c3.pdf
    • http://gigafm.com/uploads/1/3/1/0/131070851/14462e8.pdf
    • http://business-english-on-line.com/uploads/1/3/0/4/130483349/xolegotalonib.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_off00006eb1.bin
e57bd12537cf38f9999afb8c9492ea83fc6752a20c1e99c52888b036e76b951d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 9256 bytes
font_01_sfnt_off0000911e.bin
efbc20f9ab2b3241070dd6556650384f8c3fbc66deae0cee16959b3b0b5648b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x911E 10456 bytes
font_02_sfnt_off0000b299.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB299 2652 bytes

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