Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4c31f2494c491b…

MALICIOUS

PDF

12.7 KB Created: 2019-04-29 23:35:46 +01:00 Authoring application: mPDF 5.7
MD5: 2ccb984886e2be7df33253b691fc3149 SHA-1: 1ddab59c3342b434e3de44ad54394adb6c01d2dc SHA-256: 2e4c31f2494c491b8a10a120cb930c6b54191411ae26a24f69f34289ce44405f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to a single domain, loaminoo.linkpc.net, which is indicative of a link farm. This technique is often used to distribute malicious content or to engage in SEO manipulation for phishing purposes. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the link farm is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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://loaminoo.linkpc.net/3095095091099/The-Falls-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/5094097097092099/Fauve-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/4099093094094098/The-Sacrifice-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/4099090096097094/Rape-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/5096098097092096/Carthage-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/8094098097098094/Les-Chutes-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/3090098099090/The-Accursed-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/4098094099098098/Childwold-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/1098092097095098/Zombie-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/6095096095090/Solstice-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/5096098098093096/Dear-Husband-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/5096098098096098/American-Appetites-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/4094093093090099/The-Gravedigger-s-Daughter-A-Novel-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/3099093091099093/I-Lock-My-Door-upon-Myself-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/2092097099093091/Two-or-Three-Things-I-Forgot-to-Tell-You-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/9097093/Jack-of-Spades-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/1095091093098/Because-It-Is-Bitter-and-Because-It-Is-My-Heart-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/5096098098097093/Understanding-Joyce-Carol-Oates-by-Greg-Johnson.pdf
    • http://loaminoo.linkpc.net/8097098095097090/The-Best-American-Short-Stories-1979-by-Joyce-Carol-Oates.pdf
    • http://loaminoo.linkpc.net/1096099093099091/The-Collector-of-Hearts-New-Tales-of-the-Grotesque-by-Joyce-Carol-Oates.pdf

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