Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe431806b5ade99f…

MALICIOUS

PDF

13.9 KB Created: 2019-04-30 09:40:28 +01:00 Authoring application: mPDF 5.7
MD5: 66c27f60e664f8c1e2cc719dd67a63f2 SHA-1: 3e1b9b596a2d73159deac8c3bdd184e5aab4ef8a SHA-256: fe431806b5ade99fec4ce5c26eeecbe7afb9718e55190881c681b98e2ad30b04
60 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, also contains these URLs, suggesting a link farm or distribution mechanism. The primary purpose appears to be directing users to external content hosted on xiixmcuin.linkpc.net. No scripts were extracted from this sample. The exact malicious intent beyond link distribution is unclear due to the lack of script analysis.

Heuristics 2

  • 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 http://xiixmcuin.linkpc.net/1202206202207206/Pale-Bricks-by-K-L-Stein.pdf
    • http://xiixmcuin.linkpc.net/8205207200204204/Pale-Stranger-Pale-1-by-Mac-Flynn.pdf
    • http://xiixmcuin.linkpc.net/1201204201203205207/Der-Gasthof-Zur-Silbernen-Taube-Komischer-Roman-in-Drei-Buchern-Von-Karl-Stein-by-Karl-Stein.pdf
    • http://xiixmcuin.linkpc.net/5209207202203209/Bricks-to-Babel-by-Arthur-Koestler.pdf
    • http://xiixmcuin.linkpc.net/1201203207201202205/Liebe-ist-auch-Verzeihen-Jessica-Stein-Reihe-by-Jessica-Stein.pdf
    • http://xiixmcuin.linkpc.net/4202207202200204/Franny-K-Stein-s-Crate-of-Danger-Franny-K-Stein-Mad-Scientist-1-4-by-Jim-Benton.pdf
    • http://xiixmcuin.linkpc.net/1200209206201203204/The-Bricks-that-Built-the-Houses-by-Kate-Tempest.pdf
    • http://xiixmcuin.linkpc.net/1200209202209207/A-House-Made-of-Bricks-by-Penelope-Baldwin.pdf
    • http://xiixmcuin.linkpc.net/4201201208203209/The-Bricks-That-Built-the-Houses-by-Kate-Tempest.pdf
    • http://xiixmcuin.linkpc.net/7202201203204208/Wellengefl-ster-II-Neue-Seeg-nge-mit-Brina-Stein-by-Brina-Stein.pdf
    • http://xiixmcuin.linkpc.net/5201208202202203/Rick-Stein-s-Complete-Seafood-A-Step-by-Step-Reference-by-Rick-Stein.pdf
    • http://xiixmcuin.linkpc.net/7201206208206200/Rick-Stein-s-India-by-Rick-Stein.pdf
    • http://xiixmcuin.linkpc.net/1209201207200/Beyond-the-Pale-by-Elana-Dykewomon.pdf
    • http://xiixmcuin.linkpc.net/8205207203202201/Beyond-the-Pale-by-William-Trevor.pdf
    • http://xiixmcuin.linkpc.net/1200201206207202202/Insomnia-by-Pale-Horse.pdf
    • http://xiixmcuin.linkpc.net/8205207200204207/Race-the-Pale-Horse-by-Dan-Brown.pdf
    • http://xiixmcuin.linkpc.net/3209208208202201/The-Miner-s-Pale-Children-by-W-S-Merwin.pdf
    • http://xiixmcuin.linkpc.net/4206203207203209/The-Bright-and-the-Pale-by-Jessica-Rubinkowski.pdf
    • http://xiixmcuin.linkpc.net/1208201209202201/Deathly-Pale-by-Anthony-Paolucci.pdf
    • http://xiixmcuin.linkpc.net/8205207200204205/Beyond-the-Pale-Motel-by-Francesca-Lia-Block.pdf
    • http://xiixmcuin.linkpc.net/72012062

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