Malicious PDF — malware analysis report

Static analysis result for SHA-256 676590d7be08cf3f…

MALICIOUS

PDF

19.7 KB Created: 2019-05-01 17:31:36 +01:00 Authoring application: mPDF 5.7
MD5: 291648da10915f801456257b3420df9b SHA-1: 4aec3bd77d7f0db48d8f20a2f34f17015af12e94 SHA-256: 676590d7be08cf3f2bcb5f3aa444f5ae12f76a71c5237fc5dfc8e78382f774ca
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs points to a potential initial access vector via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/4099092099094090/Ascension-Dark-Breed-1-by-Sable-Grace.pdf
    • http://loaminoo.linkpc.net/3097092099094094/Ascension-Dark-Breed-1-by-Sable-Grace.pdf
    • http://loaminoo.linkpc.net/9099094098090092/Bedeviled-Dark-Breed-2-by-Sable-Grace.pdf
    • http://loaminoo.linkpc.net/4095099092098097/Dark-Passion-Rising-Dark-Breed-Enforcers-1-by-Shannan-Albright.pdf
    • http://loaminoo.linkpc.net/2095092094091096/Dark-Ascension-Generation-V-4-by-M-L-Brennan.pdf
    • http://loaminoo.linkpc.net/7099095099093097/Eclipse-The-Lost-Book-of-Ascension-Books-of-Ascension-3-by-Dirk-Strasser.pdf
    • http://loaminoo.linkpc.net/5091092097094/Ascension-An-Analysis-of-the-Art-of-Ascension-as-Taught-by-the-Ishayas-by-Maharishi-Sadasiva-Isham.pdf
    • http://loaminoo.linkpc.net/1093094095096094/Brink-of-Eternity-Guardians-of-Ascension-2-5-Dawn-of-Ascension-1-by-Caris-Roane.pdf
    • http://loaminoo.linkpc.net/1093094096093099/The-Darkening-Guardians-of-Ascension-6-5-Dawn-of-Ascension-2-by-Caris-Roane.pdf
    • http://loaminoo.linkpc.net/2094093094094091/Ascension-The-Revelation-Ascension-Trilogy-1-by-Jennifer-Turner.pdf
    • http://loaminoo.linkpc.net/3092098091096093/Breed-of-Envy-The-Breed-Chronicles-2-by-Lanie-Jordan.pdf
    • http://loaminoo.linkpc.net/4092091097092092/Breed-of-Innocence-The-Breed-Chronicles-1-by-Lanie-Jordan.pdf
    • http://loaminoo.linkpc.net/2094098099093093/Tempted-by-Midnight-Midnight-Breed-12-5-1001-Dark-Nights-9-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/1096097097098091/Fallen-from-Grace-Dark-Mirror-0-5-by-M-J-Putney.pdf
    • http://loaminoo.linkpc.net/2090098093098094/Midnight-Breed-Trilogy-Midnight-Breed-1-3-amp-8-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/2096093093097099/The-Savage-Grace-The-Dark-Divine-3-by-Bree-Despain.pdf
    • http://loaminoo.linkpc.net/2090097098097092/Anton-s-Grace-Dark-Tales-2-by-Regine-Abel.pdf
    • http://loaminoo.linkpc.net/1090090095090099/Dark-Journey-Deep-Grace-Jeffrey-Dahmer-s-Story-of-Faith-by-Roy-Ratcliff.pdf
    • http://loaminoo.linkpc.net/1091094094095090097/Swimming-with-Sharks-in-Dark-Water-Having-Race-and-Working-with-Grace-in-Corporate-White-America-by-Athene-Brinson.pdf
    • http://loaminoo.linkpc.net/1096092098099090/Western-genre-Novels-including-The-Dark-Tower-Ii-The-Drawing-Of-The-Three-The-Dark-Tower-The-Gunslinger-The-Dark-Tower-Iv-Wizard-And-Glass-The-Dark-Tower-Iii-The-Waste-Lands-The-Dark-Tower-V-Wolves-Of-The-Calla-The-Wind-Through-The-Keyhole-by-Hephaestus-Books.pdf