Malicious PDF — malware analysis report

Static analysis result for SHA-256 3452c2a3a40cf214…

MALICIOUS

PDF

19.4 KB Created: 2019-04-30 04:26:26 +01:00 Authoring application: mPDF 5.7
MD5: c53e2aeca12082854d364bdee220e6b8 SHA-1: 88411c1018dfc1da73c7aa3a2ed17afc8c5be0ab SHA-256: 3452c2a3a40cf214b66176e9b55e20faf2da3442118ed501dd87b39149232c6f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, hosted on a dynamic DNS domain. This pattern is indicative of SEO poisoning or a link farm, designed to drive traffic to potentially malicious or unwanted content. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to manipulate search engine results or redirect users. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1093098097092091/From-the-Country-of-Eight-Islands-An-Anthology-of-Japanese-Poetry-by-Hiroaki-Sato.pdf
    • http://loaminoo.linkpc.net/1098093092097/No-Sign-of-Ceasefire-An-Anthology-of-Contemporary-Israeli-Poetry-An-Anthology-of-Contemporary-Israeli-Poetry-by-Warren-Bargad.pdf
    • http://loaminoo.linkpc.net/9092095093093093/My-poetry-depicts-you-An-anthology-of-contemporary-Kurdish-poetry-by-Rebwar-Fatah.pdf
    • http://loaminoo.linkpc.net/5090098095097094/Ruins-of-Identity-Ethnogenesis-in-the-Japanese-Islands-by-Mark-J-Hudson.pdf
    • http://loaminoo.linkpc.net/4099095095095090/A-Boom-in-the-Room-an-Anthology-of-Student-Poetry-Student-Poetry-Anthologies-Book-1-by-Annie-Douglass-Lima.pdf
    • http://loaminoo.linkpc.net/3092097099090097/Anthology-of-Japanese-Literature-From-the-Earliest-Era-to-the-Mid-Nineteenth-Century-by-Donald-Keene.pdf
    • http://loaminoo.linkpc.net/3095091095094/The-Shino-Suite-Japanese-American-Poetry-by-Ronald-Phillip-Tanaka.pdf
    • http://loaminoo.linkpc.net/4095099092095097/An-Anthology-of-Modern-Irish-Poetry-by-Wes-Davis.pdf
    • http://loaminoo.linkpc.net/4095099093093096/The-Seashell-Anthology-of-Great-Poetry-by-Christopher-Burns.pdf
    • http://loaminoo.linkpc.net/4093090090096097/Poetry-After-9-11-An-Anthology-of-New-York-Poets-by-Dennis-Loy-Johnson.pdf
    • http://loaminoo.linkpc.net/8090090092095094/Confucius-to-Cummings-An-Anthology-of-Poetry-by-Ezra-Pound.pdf
    • http://loaminoo.linkpc.net/2096095090095096/Classical-Chinese-Poetry-An-Anthology-by-David-Hinton.pdf
    • http://loaminoo.linkpc.net/6093091095095/An-Anthology-of-New-Zealand-Poetry-in-English-by-Jenny-Bornholdt.pdf
    • http://loaminoo.linkpc.net/4090099096090094/May-Sky-There-Is-Always-Tomorrow-An-Anthology-of-Japanese-American-Concentration-Camp-Kaiko-Haiku-by-Violet-Kazue-De-Cristoforo.pdf
    • http://loaminoo.linkpc.net/4095099098099094/The-Ring-Of-Words-An-Anthology-Of-Poetry-For-Children-by-Roger-McGough.pdf
    • http://loaminoo.linkpc.net/6090095094091094/Modern-Arabic-Poetry-An-Anthology-by-Salma-Khadra-Jayyusi.pdf
    • http://loaminoo.linkpc.net/1090096098099096099/An-Anthology-of-German-Poetry-from-Holderlin-to-Rilke-by-ngel-Flores.pdf
    • http://loaminoo.linkpc.net/2097091096097094/My-Cruel-Invention-A-Contemporary-Poetry-Anthology-by-Bernadette-Geyer.pdf
    • http://loaminoo.linkpc.net/4099091096098092/The-Oxford-Anthology-of-English-Poetry-Vol-2-Blake-to-Heaney-by-John-Wain.pdf
    • http://loaminoo.linkpc.net/6092098099097091/Shouji-Sato-Artworks-Lightning-Pop-by-Shouji-Sato.pdf